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Help CenterASTM A815 S31803 Elbow Duplex Stainless Steel Elbows Sour Serivce ISO 10156
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Chemical Composition
| Chemical Composition Requirements
Tensile & Hardness Requirements
|
|---|
| Item | S31803 | S32205 | S32750 | S32760 |
|---|---|---|---|---|
| Yield Strength min. MPa [ksi] |
450 [65] | 450 [65] | 550 [80] | 550 [80] |
| Tensile Strength min. MPa [ksi] |
620 [90] | 655 [95] | 800 [116] | 750 [109] |
| Elongation in 2" min. % |
20.0 | 20.0 | 15.0 | 25.0 |
| HBW, max | 290 | 290 | 310 | 270 |
*The tensile and hardness tests shall be performed at room temperature.
Manufacture & Heat Treatment
The material for pipe fittings shall consist of forgings, bars, plates, seamless or welded tubular products that confirm to the chemical requirements of relative duplex grades. Duplex stainless steel pipe fittings made to ASTM A815 shall be formed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining or by combination of two or more of these operations. Most duplex stainless steel pipe fittings shall be made by a cold forming process such as cold forming of elbows and bends through a die under hydraulic pushing force, cold pressing of reducers and caps, cold extruding of tees. Since duplex stainless steels have much higher strength than common austenitic stainless steels, the power of the cold forming machine shall be sufficient enough to initiate the deformation. In addition, duplex stainless steels are also strongly work hardened as they are deformed. This rapid increase in strength during cold deformation shall be taken into account when determining the maximum material thickness that can be formed on the equipment. When the thickness is too heavy to be cold formed, the hot forming process shall apply. The hot forming temperature shall be controlled between 1100°C [2000°F] and 1150°C [2100°F]. At this temperature range, the duplex stainless steel is soft or ductile enough to be formed but not too soft so that warping or distortion can be avoided. And the increased tendency to form scale above 1150°C can be suppressed.
Type:
Elbow (180 Deg, 90 Deg. & 45 Deg. LR,SR,)
Tee (Equal &Reducingl)
Reducer (Concentric & Eccentric)
CAP,
Stubend (Long &Short)
Material:
Stainless Steel: ASTM A403 WP 304/ 304L/ 304H/ 316/ 316L/ 317/ 317L/ 321/ 310/ 347/ 904L/ etc.
Carbon Steel: ASTM A234 WPB / A420 WPL3/ A420 WPL6/ MSS-SP-75 WPHY 42/46/52/56/60/65/70 etc.
Alloy Steel: ASTM A234 / WP5/ WP9/ WP11/ WP22/ WP91
SIZES:
1/2" N. B. TO 24" N. B. Seamless Pipe Fittings(BW)
1/2" N. B. TO 72" N. B. Welded BW
Marking:Standard/ As per request
Packing: Wooden case(Fumigation free) Or as per request
Inspection: In house and third party
Document: MTC EN10204-3.1 can be provided prior to shipment
Zhongzheng Stainless Steel Co., Ltd. was established in 2018 with aregistered capital of 20 million yuan. lt is a manufacturing company thatintegrates the production of special materials, manufacturing andprocessing, sales, and technology development. The company covers anarea of 2,000 square meters and has 200 employees. it has built worldclass stainless steel seamless pipe (hot piercing, cold drawing, cold rollingproduction lines, precision steel pipe production lines, and large, mediumand small-sized welded pipe production lines. The company has beencommitted to providing high performance, high precision, hightemperature-resistant, high pressure-resistant, and corrosion-resistantsolutions and technical services for industrial equipment pipeline systems.The company specializes in producing a series of steel pipes, pipe fittingsflanges, etc., such as high-temperature (nickel-based) alloys, austeniticduplex steel, urea grade stainless steel, super stainless steel, etc. Thecompany is equipped with an annual production capacity of 5,000 tons ofstainless steel seamless pipe production line, 7,000 tons of welded pipeproduction line, and 500 tons of pipe fittings production line, etc. lt canoroduce stainless steel seamless pipes with diameters ranging from Φ6 toΦ762 and wall thicknesses ranging from 0.5 to 70 mm, stainless steelwelded pipes with diameters ranging from Φ15 to Φ2200 and wallthicknesses ranging from 0.5 to 80 mm, pipe fittings, and various stainlesssteel ingots, round steel, rough pipes, etc., according to customerrequirements and in accordance with standards such as GB, ASTM, etc.
Stainless steel pipe fittings offer numerous advantages:
A. Corrosion resistance
Stainless steel's inherent corrosion resistance makes these fittings suitable for use in harsh environments and with corrosive fluids.
B. Durability
Stainless steel fittings have a long service life, reducing the need for frequent replacements.
C. Hygiene and ease of cleaning
The smooth surface of stainless steel prevents bacterial growth and is easy to clean, making it ideal for sanitary applications.
D. Temperature resistance
Stainless steel maintains its properties over a wide range of temperatures, from cryogenic to high-heat applications.
E. Aesthetic appeal
The sleek appearance of stainless steel makes it a popular choice for visible piping in architectural applications.
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