ASTM A790 UNS S32750 Duplex Steel Pipes

ASTM A790 standard is used for engineering technical requirements of seamless and welded pipes of duplex stainless steel, ferroalloys and heat resistant alloys.
Duplex S32750 seamless pipes supplied by GNEE are cold drawn and accurate in size. They can be reduced in size and customized according to customer requirements.
ASTM A790 UNS S32750 welded pipes are hot rolled and have higher strength. To ensure consistent welds, the pipes are subjected to non-destructive testing methods such as pressure testing, eddy current and ultrasonic testing. They are suitable for applications with extremely high requirements for high strength and corrosion resistance, such as submarine pipelines, shipbuilding and offshore gas field mining.

Chemical Composition of ASTM A790 UNS S32750 Duplex Steel Pipes

Grade	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu
S32750	≤0.03	≤1.2	≤0.035	≤0.002	≤0.8	6-8	24-26	3-5	0.24-0.32	≤0.5

 

Mechanical Properties of UNS S32750 stainless steel tube heat exchanger

Grade	Tensile Strength ksi(MPa)	Yield Strength ksi (MPa)	Elongation (%)	Hardness HBW	Hardness HRC
S32750	≥116(800)	≥80(550)	≥15	≤300	≤32

Why choose GNEE

GNEE has advanced production equipment, including 113 advanced automatic gas shielded welded pipe production lines, 10 medium frequency online bright insulation annealing machines, 30 high-speed internal leveling machines, and a planned annual production capacity of 30,000 tons. The production range: round pipe specifications are 12.7mm-323mm, thickness 0.5-12.7mm, square pipe 10x10mm-250x250mm; production thickness 0.5-10mm.
 Contact us now for a free estimate.

Q: How many days can you deliver after confirmed the order?
A: For stock: within 5-7 days;
For customized product: around 30 days;
For special sizes: subject to negotiation.
Q: How does your company do quality control?
A: ISO 9001:2015 certified;
Product certificate as per EN10204 3.1 or 3.2 as per customer's request.
Q: Can I have a factory-visit?
A: Surely. All customers are welcome to visit us in China.