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Duplex Welded Large Diameter Stainless Steel Pipe DN150 S31803 / S32750 / S32760 EFW / ERW

Categories Large Diameter Stainless Steel Pipe
Brand Name: KAYSUNS
Certification: PED,ISO
Place of Origin: China
MOQ: 500Kgs
Price: USD
Supply Ability: 500Tons per Month
Delivery Time: 30-45days
Packaging Details: Plastic Bags / Plywood Boxes
Model Number: KS-WLD
Material: 304, 304L, 316, 316L, 316Ti, 317L, 321, 321H, 347, 347H, 310S, 310H, 904L, 254SMO, etc.
Standard: ASTM A312, A213,A269
Process: Cold Drawn / Cold Rolled
Size: 1/2” to 60” (DN15 ~DN1500)
Type: Welded
OD.: up to 3000mm
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Duplex Welded Large Diameter Stainless Steel Pipe DN150 S31803 / S32750 / S32760 EFW / ERW

Duplex Welded Large Diameter Stainless Steel Pipe DN150 S31803 / S32750 / S32760 EFW / ERW

Kaysuns is a top supplier of stainless steel pipes and tubings in China, we provides both seamless stainless steel pipes and welded stainless steel tubings and other ss pipes. Austenitic stainless steel has austenite as its primary phase, our product covers full 300 series and duplex stainless steel, nickel-based alloy and super austenitic stainless steel etc. We are also ability to supply titanium alloy tube and copper alloy tubes in ASME / EN norms. All of our tubings are qualified and a third party inspection are available for them.

Welded stainless steel pipe provides us a large diameter but low cost solution. Our welding process mainly is Plasma-Arc Welding(PAW), its biggest diameter could reach 3000mm. If other process is required, please state it in the requirement of stainless steel tubings.


  1. Full grades of austenitic stainless steel, duplex stainless steel and nickel based alloy
  2. Small order quantity available from 200kgs
  3. Large diameter seamless stainless steel pipe, up to 36"
  4. Thin wall thickness seamless stainless steel pipe, like o.d.273×w.t.4mm
  5. Double quality control system - first from our approved factory, second from our owned QA
  6. Fast delivery of 20~40days for general grades
  7. Flexible and professional service and operations
  8. Both seamless and welded pipe are available

Surface Finishes:

  • Pickling finish
  • bright annealed finish
  • Mirror finish
  • sand blast finish

Range Covers:

MaterialsSize*Wall Thickness**SMLSWelded
Stainless Steel 304, 304L, 309S, 310S, 310H, 316/L, 316H, 316Ti, 317/L, 347/H,
904L, S31254(254SMO)





Duplex & Super Duplex S31803, S32205, S32750,






Nickel Alloy-Alloy20,28,31,
Inconel 600,601,625,
Incoloy800, 800H, 800HT, 825, Hastelloy C22, C276, B2 etc.





Other materials

Please make a specific enquiry to us, our team will make the best to you asap.


  • *Dimension range is not available for duplex and some special grade(For example,super duplex S32750 ≤16”). Please make a specific inquiry.
  • ** Wall thickness range is not available for duplex and some special grade, please make a specific inquiry.
  • ***For details of dimension range of seamless stainless steel tubing, please click here.

UNS DesignationCSiMnPSCrNiMoNCu
S318030.03120.030.0221.0 - 23.04.5 - 6.52.5 - 3.50.08 - 0.20-
S322050.03120.030.0222.0 - 23.04.5 - 6.53.0 - 3.50.14 - 0.20-
S327500. - 26.06.0 - 8.03.0 - 5.00.24 - 0.320.5 max
S327600.05110.030.0124.0 - 26.06.0 - 8.03.0 - 4.00.20 - 0.300.50 -1.00

Size:Outer diameters from 6 up to 3000 mm (0.24 up to 118 inches),
wall thicknesses from 0.5 up to 36 mm (0.02 up to 1.42 inches).

ASTM A312, A213, A268,A269, A249, A270, A376,A511;
ASTM A789, A790;
ASTM B163, B165, B167, B407, B423, B444, B622, B677, B729;
EN10216-5, EN/DIN17455,EN/DIN17456, EN/DIN17458DIN2462 etc.

Duplex Big Size Welded Stainless Steel Pipes DN150 S31803 S32750 S32760 EFW ERW
Our factory is a leading manufacturer and supplier for qualified Large Diameter Stainless Steel Pipe, includes ASME/ASTM, EN/DIN, JIS series stainless steel pipes, and a wide range for material grades.

For more information, please contact us.

Quality Duplex Welded Large Diameter Stainless Steel Pipe DN150 S31803 / S32750 / S32760 EFW / ERW for sale
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