EFW 50" 12.70MM UNS A790 S32750 S31603 Duplex Steel Welded Pipe
ASTM UNS A790 S32750 S31603 Super Duplex Steel Welded Pipe EFW 50'' 12.70MM
Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530
Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),
UNS32760(1.4501)
Chemical Composition
| Grade |
C max |
Si max |
Mn max |
P max |
S max |
Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Duplex Stainless Steel Pipe Application:
Chemical processing, Transport and Storage.
Oil and gas exploration and offshore rigs.
Oil and gas refining.
Marine environments.
Pollution control equipment.
Pulp and paper manufacturing
Chemical process Plant
What can we do for you ?
>> 1.Are you a factory or a trading company?
1.We are a factory focused on rigging hardware over 22 years.
2.Our main products are shackles,eye bolts and nuts. turnbuckles, wire rope clips, hooks and load binders.
3.We have 6 production lines with advanced machines over 30 like friction presses, air hammer, punching machines,etc.
4.We own warehouse over 3000 square meters.
5.We have numerous distributors at home and board.
>> 2.How do you control your quality?
1.Selection of high-quality steel material from famous steel group
2.Production process standardization, process standardization, refinement.
3.100% Finished Product Testing.
4.The third party product inspections are acceptable.
5.ISO Quality Management System Certificated Factory
6.Inspection before loading
>> 3.What are your advantages compared with others?
1.BV, SGS Field Certification and Assessed Factory
2.Focused on rigging since 1997, Rich experience in Production.
3.Owned factory, the same quality product, the best price.
4.Timely Delivery with the support of 3000 square meters warehouse.
5.Numerous Patents in Rigging Hardware. Be Good at Custom-Made and Shaped Products.
6.Over 20 Professional Staff in Trading Team,Let you enjoy worry-free and effective communication.
>> 4.Can you offer samples ?
Yes, free samples are available, but freight charged by customer
>> 5.How about your quality guarantee?
We’re 100% responsible for damage of full container goods if it’s caused by our improper package.
We have very strict QC team to control the quality problem.
From material to finished products, each step, our inspection man to inspect it.For each order, we will test and have the record.
>> 6.Why choose us?
1). More than 20 year's manufacturing experience
2). OEM/ODM service offered • Small order accepted
3). Direct factory price • More competitive
4). High Quality • Zero Complaint
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.