A691 2-1/4CR Straight Seam Steel Pipe
GNEE Company provides precision-engineered A691 2-1/4 CR Round Welded Pipe at cost-effective prices for various engineering applications.
The alloy combination of A691 2-1/4CR Straight Seam Alloy Steel Pipe includes chromium, molybdenum and vanadium, so A691 2-1/4CR Straight Seam Welded Pipe can withstand extreme temperatures, resist pitting and stress corrosion cracking even in very harsh environments, and exhibit excellent tensile strength ranging from 415 to 585 MPa.
A691 2-1/4CR Straight Seam Electric Fusion Pipe has excellent high temperature resistance and durability, and is mainly used in applications that transport gas, oil and natural gas at high pressure or high temperature.
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ASTM a691 grade 2 1/4 cr alloy steel pipes physical property
| Designation | Elongation in 8 in. [200mm], min % | Tensile strengthksi [MPa] | Yield strength, min ksi [MPa] |
|---|---|---|---|
| Grade 2 1/4 Cr | 18 | 75-100 [515- 690] | 45 [310] |
Heat treatment of ASTM A691 2-1/4cr EFW pipes
| Pipe grade | 2 1/4CR |
| Specification of ASTM | A387/A387M |
| Normalizing temperature, max unless otherwise noted, °F (°C) | 1850 (1010) |
| Range of temperatures after weld heat treatment (stress relieving), °F (°C) | 1200-1400 (650-760) |
| Tempering temperature, min, °F (°C) | 1250-1400 (675-760) |
| Unless specified otherwise, the maximum quenching temperature, °F (°C) | 1700 (925) |
A691 2-1/4CR alloy welded pipe
Why choose us
GNEE pipes and tubes have a wide range of applications in many market sectors, including the oil and gas, petrochemical and construction industries. And we can offer different properties for different purposes (e.g. corrosion protection).
Gnee Company Team
FAQ
1. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
2.What can you buy from us?
Stainless Steel pipe,Carbon Steel,Pipe Galvanized Steel,
3. Why should you buy from us not from other suppliers?
The company has sufficient inventory to ensure that customers receive the goods at the lowest price and the shortest delivery time
when purchasing. A professional logistics team and after-sales team will solve all delivery and receiving problems for you.
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