Performance features:

1 Excellent corrosion resistance and corrosion resistance, especially the corrosion resistance, corrosion resistance, corrosion resistance, corrosion resistance, wear resistance, etc.

2 Good welding

3 Good comprehensive mechanical properties

4 Excellent intergranular corrosion resistance

5 Cost-effective, long service cycle

Normal Available Size

Products OD WT Length
Inch MM Inch MM Inch Meter
Tube 1/2”-3” 12-76.2 0.02”-0.5” 0.5-12.0 105’ 32
Pipe NPS 1/2”-6” 21.34-168.3 Sch10-Sch80 2.11-12.7 98’ 30

Super Duplex Stainless Seamless Steel Tube&Pipe

(Super) Duplex Stainless Steel Pipe

Dual phase stainless steel with α +γ dual phase structure, so the characteristics of the performance characteristics of the construction of austenitic stainless steel and ferritic stainless steel, is a kind of high strength and corrosion resistance of stainless steel. Usually, in the case of low Cr, C content in 18%~28%, Ni content in 3%~10%. Some steels also contain Mo, Cu, Nb, Ti, N and other alloy elements.

Compared with ferrite, plastic, toughness, and no room temperature brittleness, the intergranular corrosion resistance and welding performance are significantly improved, while maintaining the 475 degrees of ferrite stainless steel and high thermal conductivity, has the characteristics of high plasticity. Compared with that of austenitic stainless steel, yield strength significantly increased resistance intergranular corrosion, should be stress corrosion and corrosion fatigue and abrasion performance is significantly improved.

Major brands:S31803/S32250, S32750, S32760, S31500, S31500, 32001, S32003, S32304

Common standard:

ASTM A789 (ASME SA789)

Seamless and Welded Ferritic / austenitic stainless steel tubes for general purpose

astm a790 (asme sa790)

Seamless and Welded Ferritic / austenitic stainless steel

ASTM A928 (ASME SA928)

With the filler metal fused Welded Ferritic / Austenitic (duplex) Standard Specification for stainless steel pipe

GB/T 21832-2008

AUSTENITIC FERRITIC duplex stainless steel welded steel tube

GB/T 21833-2008

AUSTENITIC FERRITIC duplex stainless steel seamless steel tube

Stainless Welded Tubing

Stainless steel welded pipe also one of our main products. We have advanced pipe-making equipment which are imported from overseas high-tech company.

The design and manufacturing annual capability is up to 20,000 tons. In order to meet the customers’ requirements, we have set up a complete quality assurance system, taking the leadership in obtaining the manufacture permission of the special equipment of pressure piping part and the certification license of ISO9001-2008, equipped with complete testing facilities, including spectral analysis, intergranular corrosion, and mechanical property. The product technology complies with the standards of GB/T 12771-2008, ASTM of USA, DIN of Germany, EN of EU, JIS of Japan. We provides high-qualified products and services to both domestic and foreign customers.

China Standard GB/T2770 GB/T2771 HG20537 GB/T24593 GB/T192283
American Standard A249/A249M A269/A269M A312/A312M A358/A358M A554/A554M
A668/A668M A789/A789M A790/A790M A928/A928M
Germany Standard DIN2463
EU Standard EN10217-7
Japan Standard JIS G3463 JIS G3468

SIZE RANGE:

OD: 10.2~1524MM

WT:0.5~40MM

Duplex Stainless Tube

Boiler Tubing and Piping

Grade: 304H, 310H, 321H, 347H, 347HFG

Specification: 
ASME SA213: Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

The specifications of ASME SA312, JIS G3459, EN 10216-5, DIN 17456, DIN 17458 are available.

 Pressure Vessel Tubing

1), Heat Exchanger Tubing (Straight and U tubing)
2), Air Cooler Tubing
3), Condenser Tubing
4), Evaporator Tubing

Specification:
ASTM A213 (ASME SA213): Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A789 (ASME SA789): Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

ASTM A268(ASME SA268): Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Final Finishing: Solution Annealed & Pickled, Bright Annealed

The specifications of JIS G3463, EN 10216-5 are available.

Hydraulic Tubing

Specification:
ASTM A269: Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A213 (ASME SA213): Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and 
Heat-Exchanger Tubes

Final Finishing: 
Solution Annealed & Pickled, Bright Annealed, OD Polished

The specification of EN 10216-5 is available. 

Pipes for  Fittings

Specification:
ASTM A312 (ASME SA312): Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A790 (ASME SA790): Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

ASTM B423(ASME SB423): Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy(UNS N08825 and N08221) Seamless Pipe and Tube

ASTM B407(ASME SB407): Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

The specifications of JIS G3459 and EN 10216-5 are available.

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