Application Oil and Gas Refinery, Petrochemical, Mss-Sp-58 Carbon Steel Pipe Fitting (s) / Variable Spring Hangers

MSS SP-58 Hanger and Support Types

Refer to following figure: 

Type 1 Adjustable steel clevis hanger

A pipe attachment for suspension of horizontal stationary lines and providing a means for vertical adjustment. 

Type 2 Yoke-type pipe clamp

A pipe attachment for suspension of horizontal stationary insulated lines. This type of clamp is also made to accommodate pipe of nonstandard size when designed with a filler plate. 

Type 3 Carbon- or alloy-steel three-bolt pipe clamp

A pipe attachment for suspension of horizontal stationary lines. 

Type 4 Steel pipe clamp

A pipe attachment for suspension of horizontal stationary insulated lines. 

Type 5 Pipe hanger

A pipe attachment for suspension of horizontal stationary lines either using a hanger rod or bolting to wall from the T slot provided in the side of the strap. 

Type 6 Adjustable swivel pipe, split ring type or solid ring type

A pipe attachment for suspension of horizontal stationary lines. 

Type 7 Adjustable steel band hanger

A pipe attachment for suspension of horizontal stationary lines and providing a means for vertical adjustment. 

Type 8 Extension pipe or riser clamp

A pipe attachment for suspension of vertcal stationary lines without the use of hanger rods. The transfer of piping load is accomplished by resting the ears of the clamp on a bearing surface. 

Type 9 Adjustable band hanger

A pipe attachment for suspension of horizontal stationary lines. 

Type 10 Adjustable swivel ring, band type

A pipe attachment for suspension of horizontal stationary lines and providing a means for vertical adjustment. 

Type 11 Split pipe ring with or without turnbuckle adjustment

A pipe attachment for suspension of horizontal stationary lines permitting installation before or after pipe is in place. 

Type 12 Extension split pipe clamp, hinged or two-bolt

A pipe attachment for suspension of horizontal stationary lines used in conjunction with a pipe nipple. 

Type 13 Steel turnbuckle

A device with one left-hand internal threaded end and one right-hand internal threaded end, used to join two threaded rods and providing for vertical adjustment. 

Type 14 Steel clevis

A device which provides for the attachment of a threaded rod to a bolted or pinned connection. 

Type 15 Swivel turnbuckle

A device which provides flexibility at the pipe connection and a means of vertical adjustment. 

Type 16 Malleable iron socket

A device for attaching threaded rods to various types of building attachments. 

Type 17 Steel weldless eye nut

A forged-steel device which provides for the attachment of a threaded rod to a bolt or pin connection. 

Type 18 Steel or malleable concrete insert

A cast-in-place device which provides for a rod attachment capable of nominal lateral adjustment. 

Type 19 Top beam C-clamp

A device requiring no welding which attaches to the top flange of a structural shape where the vertical rod is required to be offset from the edge of the flange. 

Type 20 Side beam or channel clamp

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be at the edge of the flange. 

Type 21 Center beam

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be centered on the structural shape. 

Type 22 Welded beam attachment (as shown or inverted less bolt)

A structural attachment welded to the bottom of steel beams and used as a means for connecting hanger rods to the beams. 

Type 23 C-clamp

A device requiring no welding which attaches to a flange of a structural shape and provides for attaching a threaded rod. 

Type 24 U-bolt

A U-shaped rod with threaded ends used as a support or guide. 

Type 25 Top beam clamp

A device requiring no welding which attaches to the top flange of a structural shape where the vertical rod is required to be at the edge of the flange. 

Type 26 Pipe clip

A pipe attachment for suspension of horizontal stationary lines by bolting the clip directly to a structure. Also referred to as a pipe strap or strap. 

Type 27 Side beam clamp

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be offset from the center of the shape. 

Type 28 Steel beam clamp with eye nut

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be centered on the structural shape. 

Type 29 Linked steel clamp with eye nut

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be centered on the structural shape. 

Type 30 Malleable beam clamp with extension piece

A device requiring no welding which attaches to the bottom flange of a structural shape where the vertical rod is required to be centered on the structural shape. 

Type 31 Light welded steel bracket

A braced cantilever device intended for supporting a gravity load from rod-type hangers. This device is typically bolted to a wall and may be installed with the brace either above or below the horizontal member. 

Type 32 Medium welded steel bracket

A braced cantilever device intended for supporting maximum gravity loads and/or horizontal loads up to 1500 lb (6670 newton, N). Loads may be applied anywhere along the main member. This device is typically bolted to a wall and may be installed with the brace above, below, or on either side of the main member. 

Type 33 Heavy welded steel bracket

A braced cantilever device intended for supporting maximum gravity loads and/or horizontal loads up to 3000 lb (13, 340 newton, N). Loads may be applied anywhere along the main member. This device is typically bolted to a wall and may be installed with the brace above, below, or on either side of the main member. 

Type 34 Side beam bracket

A device requiring no welding which attaches to the sides of steel or wooden members and provides a means for vertical adjustment. 

Type 35 Pipe slide and slide plate

A device for supporting piping having horizontal movements and where a low coefficient of friction is necessary. 

Type 36 Pipe saddle support

A device having a curved base for cradling horizontal pipe and which slips into a nominal diameter pipe stanchion. 

Type 37 Pipe stanchion saddle

A device having a curved base for cradling horizontal pipe and which slips into a nominal diameter pipe stanchion. The U-bolt yoke provides stability. 
Type 38 Adjustable pipe saddle support

A device having a curved base for cradling horizontal pipe and which threads into a nominal diameter pipe stanchion. This device provides vertical adjustment. 

Type 39 Steel pipe-covering protection saddle

A device used on insulated piping which is designed to minimize heat losses and prevent damage to insulation. 

Type 40 Protection saddle

A metal device intended to prevent crushing of insulation and/or breaching of the vapor barrier. It is typically used at support points. 

Type 41 Single pipe roll

A device used for supporting horizontal piping from two rods, allowing for vertical adjustment and consisting of a roller that allows for axial movement with virtually no frictional resistance. 

Type 42 Carbon- or alloy-steel riser clamp

A pipe attachment for supporting vertical piping through the use of shear lugs welded to the pipe. Load bolts are provided to transfer the pipe load to the rod hanger assembly. 

Type 43 Adjustable roller hanger with or without swivel

A device used for supporting horizontal piping from a single rod, allowing for vertical adjustment and consisting of a roller that allows for axial movement with virtually no frictional resistance. 

Type 44 Pipe roll complete

A device used for supporting horizontal piping where vertical adjustment is unnecessary and consisting of a roller that allows for axial movement with virtually no frictional resistance. 

Type 45 Pipe roll and plate

A device used to support horizontal piping, having minimal axial movement, from beneath and where no vertical adjustment is necessary. 

Type 46 Adjustable pipe roll and base

A device used to support horizontal piping, having axial movement, from beneath and where vertical adjustment is necessary. 

Type 47 Restraint control device

A rigid, mechanical, spring, or hydraulic device used for absorbing shock loading and/or controlling sway in piping systems. 

Type 48 Spring cushion

A noncalibrated, rod-type, single-coil spring support used where a cushioning effect is desired. 

Type 49 Spring cushion roll

A non-calibrated, rod-type, double-coil rod spring support used where a cushioning effect is desired along with a pipe roll. 

Type 50 Spring sway brace

A spring device used for absorbing shock loading and/or controlling sway in piping systems. 

Type 51 Variable spring hanger

A device having a single-spring coil which supports the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a varying load when the piping moves from the cold position to the hot position. This type of spring hanger supports the pipe from above. 

Type 52 Variable spring base support

A device having a single-spring coil which supports the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a varying load when the piping moves from the cold to the hot position. This type of spring hanger supports the pipe from below. 

Type 53 Variable spring trapeze hanger

A device having double-spring coils which support the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a varying load when the piping moves from the cold position to its hot position. This type of spring hanger supports the pipe from above with two rods. 

Type 54 Constant support hanger, horizontal type

A device having a single-spring coil working in conjunction with counter balancing mechanisms to support the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a constant load when the piping moves from the cold position to the hot position. This type of constant hanger has the spring coil in the horizontal position and supports the pipe from above. 

Type 55 Constant support hanger, vertical type

A device having a single-spring coil working in conjunction with counter balancing mechanisms to support the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a constant load when the piping moves from the cold position to the hot position. This type of constant hanger has the spring coil in the vertical position and supports the pipe from above. 

Type 56 Constant support hanger, trapeze type

A device having double-spring coils working in conjunction with counter balancing mechanisms to support the gravity loads of piping systems that are subjected to vertical thermal movements. This device produces a constant load when the piping moves from the cold position to the hot position. This type of constant hanger has the spring coil in the vertical position and supports the pipe from below with two rods. 

Type 57 Plate lug

A structural attachment which provides a means of connecting rod type hangers to structural steel members via a pin or bolt through the hole of the lug. 

Type 58 Horizontal traveler

A device which permits the structural attachment end of rod-type hangers to accommodate horizontal piping movements in conditions where offsetting of conventional structural attachments is not practical due to limited space

FQA: 

Q: What types of pipe supports? 
A: Types of pipe supports 

• Pipe Guides (Cylinder Pipe Guides - Spider Guides)
• Pipe Anchors (Permali Cold Shoes)
• Variable spring hanger. 
• Bell crank in CSH. 
• Insulated Supports (Cold Shoes)
• Engineered Spring Supports (Variable Springs)
• Shock Absorber (Hydraulic)

Q: What are the different types of pipe supports? 
A: Different Types of Pipe Supports Used in the Oil and Gas Industry 

• Hanger. Vertical pipe supports containing a rod are called as hangers...
• Variable Spring Support. The variable spring support is commonly known as a variable spring hanger...
• Rigid. The rigid pipe support is designed to avoid movement in at least one direction. 
• Rigid Hanger...
• Anchor...
• Axial Restraint...
• Lateral Restraint...
• Sway Brace. 

Q: What is trunnion support in piping? What is a pipe trunnion? 
A: Pipe trunnions could refer to a variety of supports that mainly functionto support the pipe weight and generally used
Where little or no pipemovement is anticipated. 

Q: What is shoe support in piping? 
A: To support oversized and heavyweight piping, pipe shoes as well as other industrial clamps are used. Pipe shoes are
Designed to elevate the pipe at some height above the pipe support. A pipeline needs to be supported from a
Foundation or a structure...The pipe shoe is usually installed as a wear plate
Q: What is saddle support? 
A: A saddle support is a support consisting of a stanchion that utilizes a curved section for cradling the pipe. 
Q: What is pipe shoe? 
A: A pipe shoe is a structure consisting of a saddle and integral base that is used to support the pipe by transmitting the
Load or forces to the adjacent structure. 
Q: What is pipe guide? 
A: Pipe guides are needed and used to facilitate the thermal pipe expansion so that the axial movement is properly directed to the expansion joint. Guides are designed to prevent buckling or squirming of the pipe. 
Q: What special types of pipe supports? Spring hangers /can type supports? And applications? 
A: The use of spring hangers and can type supports is quite common in critical processes and power plant units. Lines operating at high temperature move upwards/downwards (depending on the pipe configuration) due to thermal expansion. Variable spring supports are useful in high temperature, high pressure conditions as they have a spring element that gets compressed or flexed when there is thermal movement of pipe and related loads. Rigid supports don't work in such conditions and may cause breakdown. The spring hangers give continuous support when there is expansion or contraction of the pipe. 
Application: To minimize piping loads on nozzles, spring supports shall be used. 



Constant spring Supports






Definations

HIGH PRECISION CONSTANT SPRING PIPE SUPPORTS /HANGERS IS DESIGNING AND MANUFACTURED WITH THE PRINCIPLES OF MECHANICS. IN THE RANGES OF LOAD AND TRAVEL, THE LOAD AND SPRING STRENGHT KEEP BALANCE. THEREFORE, HI-PRECISION CONSTANT SPRING PIPE SUPPORTS /HANGERS WILL APPLY TO STABLE AND CONSTANT POWER TO THE PIPING / EQUIPMENT SYSTEM, WITHOUT ADDTIONAL STRESS TO THE SYSTEM. IF LARGE LOAD TORLANCE HAPPENS, IT WILL BE HARMFUL BY THE UNCONTROLABLE STRESS TO THE PIPING OR EQUIIPMENTS SYSTEM. AND MORE DANGROUS, THE CONNECTION COMPONENTS WILL BE OVERLOADED TO EXTREME LEVEL, THEN CAUSING THE WHOLE SYSTEM TO FAIL. THUS, IT IS ORGINAL AND ESSENTIAL REQUESTS THAT THE STABILITY AND SAFETY OF THE CONSTANT SPRING SUPPORTS /HANGERS. 

HIGH PRECISION CONSTANCT SPPRING SUPPORTS /HANGERS IS USUALLY APPLIED AT DECREASING STRESS WORKPLACE, E. G. AT THE SUSPENSION COMPONENTS OF PETROCHEMICAL FACILITIES, PIPING AND ELECTRICAL POWER BOILER, POWER STATION VAPOUR, HOT-WATER, AND CHIMNEY TUBE AND FURNACE etc. 

THE HI-PRECISION CONSTANT SUPPORTS /HANGERS IS SELECTED WHERE THE HEAT EXPENSION MOVE EXCEEDING 12 mm, IN ORDER TO ESCAPING THE BEND STRESS AND OTHERS HARMFUL STRESS MOVEMENT. 

THE HI-PRECISION CONSTANT SUPPORTS /HANGERS, LOAD RANGER IS 250 TO 40000 N (25.5 TO 40816KGS), TOTAL TRAVEL RANGER IS 0-600mm. IT'S SPECIAL AT ITS HIGH LOAD ACCURACY AND CONSTANTABILITY SMALLER THAN 4%. SYMMETRY SHAPED, WITHOUT SIDE-SHIFT, VERTICAL INSTALLATION, SMALL SHELL-BODY, LIGHT-WEIGHT, SMALL -VOLUME, EASY-ADJUSTABLE

Application

CONSTANT SPRING SUPPORT AND HANGER ARE USED WHERE VERTICAL MOVEMENTS SHOULD BE RESTRICTED BY RIGID PIPE SUPPORT AND HANGERS AND WHERE SPRING SUPPORTS AND HANGERS CAN NOT BE USED DUE TO THE HIGH DEVIATION BETWEEN INSTALLATION LOAD AND OPERATING LOAD. CONSTANT SPRING SUPPORT AND HANGERS ARE ALSO USED WHERE NO GREAT SUPPORTING LOAD DEVIATIONS ARE ALLOWED IN ORDER TO AVOID ADDITIONAL LOADINGS OF THE COMPONENTS OR CRITICAL PIPE COMPONENTS. 

Features 

• CONSTANT LOAD THROUGHOUT THE FULL LOAD AND TRAVEL RANGE
• LOAD ADJUSTMENT BY LOAD ADJUSTMENT SCREW
• AT LEAST ± 15% LOAD ADJUSTABILITY WITHOUT CHANGER OF THE TOTAL TRAVEL. 
• INDIVIDUAL CALIBRATION TO THE REQUESTED LOAD BY ELECTRONIC LOAD-TRAVEL RECORDER
• RECORDING OF THE TEST DATA
• HOT-COLD LOAD MARKING 

VARIABLE SPRING SUPPORTS AND HANGERS
Definations

JK series variable force spring support hangers are mainly used for supporting important equipment and pipelines in the petrochemical and power industries. Applicable to workplaces with a load range of 0.28~217.38 KN, a displacement range of 0~120mm, a load change rate of no more than 25%, and an ambient temperature range of -20~200°C. It has the characteristics of compact structure and convenient installation. 

Performance characteristics 

1. Load and displacement range. Load range: 154KN displacement range oil species: 0-30mm, 0-60mm, 0-90mm, 0-120mm; 
2. Temperature range of use: - 20 ~ 200ºC; 
3. Spring hanger with the shell protection spring, from mechanical damage and environmental corrosion; 
4. The spring support hanger is provided with load and displacement indicating plate, and the design position of cold and heat state is marked on the plate. 

The choice of spring support hanger 

1. Selection of spring specifications

According to the working load of the support and hanger, the displacement is the direction of displacement, and the spring number is selected according to Table 2. 
If the pipe displacement direction is upward, the working load is generally checked from the middle line and the upper thick line in Table 2, and then the installation load is checked downward according to the displacement amount. 
If the pipe displacement direction is downward, the working load is generally checked from the middle line and the upper thick line in Table 2, and then the installation load is checked upward according to the displacement amount. 
When selecting, whether the pipe is up or down, the working load and installation load should be between the upper and lower thick lines in Table 2, and the load change rate should not exceed 25%. 
Load change rate = {(working load - installation load) / working load} × 100% ≤ 25%
Where: 
When the displacement is upward, the installation load = working load + displacement amount × spring stiffness; 
When the displacement is downward, the installation load = working load - displacement amount × spring stiffness. 
Spring selection example: 

1. The working load of a certain pipeline is 8225N, the displacement is upward when running, and the displacement is calculated to be 10mm. Try to select the spring. 

1. Check Table 2 to determine the range of the hanger displacement is 0-60mm
2. In the centre line of the table 2 and the upper thick line, the working load of the hanger number 12 is 8223N. 
3. With the 0-60mm scale value corresponding to 8225N, the installation is down to 10mm and the sum is 9721N. 
4. Check the load change rate: {(8223-9721)/8225}×100%=18.2%<25%
5. Therefore, use a spring with a displacement range of 0-60mm and number 12

1. The working load of a pipeline is 2020N, the displacement is downward when running, and the displacement is calculated to be 40mm. Try the spring. 

1. Check Table 2 to determine the range of the hanger displacement 0-60mm
2. In the centre line and the lower thick line of Table 1B, the working load of the hanger number 6 is 2018N, which is closest to 2020N. 
3. With the 0-60mm scale value corresponding to 2018N, the installation load is 1480N up to 40mm. 
4. Check the load change rate: {(2018-1480)/2018}×100%=26.7% > 25%
5. Therefore, the displacement range of the first gear is 0-90mm, and the installation load can also be calculated = 2018-40×8.967=1659N
6. Re-check the load change rate: {(2018-1659)/2018}×100%=17.8%<25%
7. Therefore, the spring with the displacement range of 0-90mm and number 6 is selected. 

1. According to the space structure of each lifting point, the working requirements select the housing structure and model of the spring support hanger. Still the above example: 

1. According to the pipeline arrangement, the installation type is A type, so the selected spring hanger is JK30A12. 
2. According to the pipeline arrangement, the installation type is B type, so the selected spring hanger is JK90B6.    

CONSTANT DISC-SPRING SUPPORTS AND HANGER













Definations

Constant disc spring Support series products are used to support various pipelines and equipments that generate thermal displacement during operation, to bear load, limit displacement, control vibration, etc., widely used in steam boilers of power station boilers and power plants. Hanging and supporting parts of smoke, wind and coal pipelines, and other places where oil and chemical equipment need to be suspended and supported, and have the characteristics of large load range, stable suspension, convenient installation and reliable operation. 
Application
1. Constant disc spring supports are suitable for load range 500-400000N, displacement range 50-400mm, temperature range -20°~+200°. 
2. When the structure and application range of the constant disc spring support are not in the table, special order can be ordered. 

Figure selection

1. Constant disc spring support according to the provisions of GB/T17116.1-1997 "Pipe Support and Hanger Part 1- Technical Specifications", paragraph 5.4.1.8, the force of the constant disc spring support in the upper and lower The specified load constant (including friction) within one stroke range shall not exceed 6%. The specified load constancy shall be measured by a dedicated load test device and calculated as follows: 
Load constancy = (P1max - P2min) ÷ (P1max + P2min) × 100% ≤ 6%
2. Before the displacement is determined, the constant effort disc spring shall calculate the maximum vertical displacement of the pipe or equipment from the cold status to the hot status, and leave a proper adjustment margin. The recommended margin is 20% of the calculated one, but not less than 20mm, and rounded according to the standard displacement value in Table 2. 
FB selection = 1.2fB count and fB select ≥ fB count + 20
Where: FB selection = selection of displacement amount fB calculation = calculation of displacement
3. The threaded hanger of the constant force disc spring hanger has considered the influence of the product's own weight. The calculation of the working load during design selection does not require the weight of the product. 
4. Selection demonstration: 
For a refinery pipeline, the calculated displacement value is 165mm, the displacement is downward, and the calculation requires the hanger to withstand 33996N load. According to the installation requirements, the DH2 type test is used to select the constant force disc spring hanger type. 
FB selection = 1.2 × 165mm = 198mm, taking the displacement of 200mm; 
Check Table 2 to calculate a working load of 33996N similar to the standard load of 35500N, at this time the working load number is 75; 
Therefore, the model number is: DH2075, 200↓/35500-M36
5. Select the appropriate model from Table 5 based on the calculated load and displacement values at the pipe support point. If the load and displacement values are outside the scope of this standard, please indicate when ordering. 
6. When the support hanger is installed, it is only necessary to adjust the basket nut when the load needs to be adjusted due to the deviation of the working load. When the load is adjusted in a large direction, the range of the displacement becomes small, and conversely, when the load is adjusted in a small direction, the range of the displacement becomes large. 
7, the choice of type, should consider the installation space and piping equipment layout required by the hanger itself and the overall layout requirements. 
DH1, DH2 and DH3 are respectively suspended by suspension, single-ear suspension and binaural suspension. The installation position is relatively flexible. The support and hanger body can be placed arbitrarily in the space of 360°. Type. 
The DH4 and DH5 models are respectively the lower adjustment shelving and the support shelving type, which are characterized in that the support and hanger body is installed reliably, but the corresponding double beam is required for support.  VARIABLE DISC -SPRING HANGERS AND SUPPORTS

Definations

It directly phrases to long-term, stable, safe and economic operating of whole industrial piping system. All the veried pipe supports applying at pressure pipings, holding the vertical loads and become more and more needed. During the past years experice of manufacturing and salement, adopted state-of-art technologies of the world, and with the hard-works of the employees, focusing on the problems during at the installation of piping operations, we choose the best raw materials and fine-design, innovating, we research and devolope a mount of varied supports for different applications, the spotlight on is hi-effectative, energy-conservative heat insulated pipe supports, cold insulated pipe supports, low friction pipe supports. All the varied supports is depending on real requests, meeting the limit-stop, position-move, limit, guide, adjustment etc working functions. 
Application: 

1. Variable disc spring hanger and supports

-load range at 375-560000N, 
-travel range 0-60mm
-threaded rod dimension/size: M12-M110
-operating temperature: ≤-20ºC through 200ºC
2. Structures and operations as showing at table 1
Variable Disc Spring Hanger and Support structure 
SPRING HANGERS AND SUPPORT TYPES 

SADDLE PIPE SUPPORT   

CRYOGENIC SUPPORT ( COLD SHOE)




HOT INSULATED SUPPORTS