A691 3CR Straight Seam Steel Pipe
gnee has 14 steel production lines, 10 processing equipment for processing, bending, painting, heat treatment, cutting, drilling, beveling, tempering, surface treatment, complete testing equipment and strong technical force. The annual production capacity is more than 60,000 tons.
A691 3CR welded steel pipe is defined by ASTM A691/A691M standards, covering carbon steel and alloy steel pipes, electrofusion welded to add filler metal, made of pressure vessel quality steel plates, suitable for high pressure applications at high temperatures.
A691 3CR straight seam welded steel pipe contains 3% chromium and 1% molybdenum with carbon, manganese, silicon, nickel, copper and vanadium. This gives A691 3CR pipe excellent high temperature performance and corrosion resistance to withstand rigorous chemical processing systems.
A691 3CR boiler tube is suitable for high pressure conditions and high temperature environments. It is suitable for working environments such as boilers in power plants and petroleum industries, and water pipelines in buildings.
Take ActionContact Us: sales@gneetube.com
ASME SA691 Alloy Steel EFW Pipes range
| Specification | ASTM A691 / ASME SA691 |
| Grades | ASTM A691 1-1/4CR, ASTM A691 2-1/4CR, ASTM A691 3CR, ASTM A691 5CR, ASTM A691 9CR, ASTM A691 91, ASME SA691 1-1/4CR, ASME SA691 2-1/4CR, ASME SA691 3CR, ASME SA691 5CR, ASME SA691 9CR, ASME SA691 91 |
| Type | EFW (Electric Fusion Welded Pipes) |
| Class Designation | CLASS 10, ,11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43 |
| Outer Diameter Size | 16" NB to 100" NB (Nominal Bore Size) |
| Wall Thickness | Schedule 20 to Schedule XXS (Heavier On Request) Up to 75 mm Thickness |
| Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| Ends | Plain Ends / Beveled Ends / Coupling |
| Delivery Conditions | As Rolled, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
| Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| Other Testing | NACE MR0175, NACE TM0177, NACE TM0284, Charpy V-Notch Test, Radiograph HIC Examination, XRAY, Ultrasonic EXAMINATION, Liquid Penetrant, Magnetic Particle, HIC Test, SSC Test, SWC, H2 Service, IBR, PWHT Etc. |
| Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API. |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
A691 Grade 3Cr alloy welded pipe heat treatment
|
Materjal / Grad |
Post ta 'Trattament ta' Sħana |
Normalizzar |
Jaqtgħu |
It-tempra |
|
Firxa tat-Temperatura (℃) |
Temperatura, Max (℃) |
Temperatura, Min (℃) |
||
|
A691 3Cr |
590-705 |
1010 |
925 |
620-745 |
A691 Grade 3Cr Carbon alloy tube Chemical Analysis:
|
Designation |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
|
ASTM A691 3Cr |
0.15 |
0.3-0.6 |
0.035 |
0.035 |
0.5 |
2.75 - 3.25 |
0.9 - 1.1 |
A691 Grade 3Cr Welded steel pipe Physical Property:
|
Designation |
Tensile strength ksi [MPa] |
Yield strength, min ksi [MPa] |
Elongation in 8 in. [200mm], min % |
|
ASTM A691 Grade 3Cr |
74700 - 100000 [515 - 690] |
45000 [310] |
18 |
A691 3CR Straight seam Steel tube
Why choose us
Gnee company covers an area of 35,000 square meters and has more than 200 employees, including 80 technical staff. We have established an effective and complete quality control and assurance system. The company has also obtained ISO9001 quality system certification.
Gnee Company products
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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