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Help CenterSteel Pipe & Tube & Alloy Steel Pipe，15CrMoG、12Cr1MoVG、P11/P22、Cr5Mo/P5
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Steel Pipe & Tube & Alloy Steel Pipe，15CrMoG、12Cr1MoVG、P11/P22、Cr5Mo/P5NegotiableMOQ: 5 Metric Tons -
Steel Pipe & Tube & Alloy Steel Pipe，15CrMoG、12Cr1MoVG、P11/P22、Cr5Mo/P5NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Galvanized Steel Pipe，Q195, Q215, Q235BNegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Galvanized Steel Pipe，Q195, Q215, Q235BNegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Galvanized Steel Pipe，Q195, Q215, Q235BNegotiableMOQ: 5 Metric Tons
Alloy Steel Pipe Detailed Product Description
1. Product Introduction
Alloy steel pipe is made of carbon steel matrix added with chromium, molybdenum, nickel, manganese, vanadium and other alloy elements with total alloy content over 1%, manufactured by hot rolling, cold rolling and cold drawing processes into seamless or welded steel pipes. Compared with ordinary carbon steel pipes, it features high strength, high temperature resistance, creep resistance, corrosion resistance and excellent low-temperature toughness, capable of stable long-term operation under harsh working conditions.
2. Main Materials & Chemical Composition
15CrMoG: Mainly used for high-pressure boilers and superheaters, maximum service temperature up to 550℃.
12Cr1MoVG: Preferred material for high temperature and high pressure service, maximum service temperature up to 580℃, outstanding creep resistance.
P11/P22: Widely applied in power station and petrochemical high-temperature pipeline projects.
Cr5Mo/P5: Excellent sulfide corrosion resistance, ideal for heating furnace tubes in oil refineries.
Functions of Alloy Elements
Chromium: Improve oxidation resistance, corrosion resistance and hardenability.
Molybdenum: Enhance high-temperature strength, creep resistance and hydrogen corrosion resistance.
Vanadium: Refine grain structure, promote overall strength and toughness.
3. Execution Standards
GB/T 8162: Structural seamless steel pipe
GB/T 8163: Seamless steel pipe for fluid transportation
GB 5310: High-pressure boiler seamless steel pipe
GB 9948: Seamless steel pipe for petroleum cracking service
ASTM A335 P11/P22: High-temperature seamless alloy steel pipe
ASME SA213: Boiler and heat exchanger steel pipe
4. Specification Parameters
Outer Diameter: 6mm-660mm
Wall Thickness: 2mm-80mm
Standard Length: 6m, 12m or customized fixed length
Common Specification Mark: Outer diameter × wall thickness
5. Product Performance Advantages
High mechanical strength, strong pressure resistance and impact resistance.
Excellent high temperature resistance, no deformation and oxidation under long-term high temperature environment.
Good chemical corrosion resistance, resistant to hydrogen sulfide, carbon dioxide and various medium erosion.
Stable low-temperature performance, free from brittle fracture in low-temperature environment.
Fine welding performance, easy for on-site installation and construction.
6. Production Technology
Hot rolling process: Suitable for large diameter and thick wall alloy steel pipes with stable overall performance.
Cold rolling & cold drawing process: High dimensional accuracy and smooth surface, suitable for small diameter thin-wall pipes.
Integral normalizing and tempering heat treatment to eliminate internal stress and optimize mechanical properties.
7. Application Scope
Power industry: High-pressure boiler superheater, reheater and main steam pipeline
Petrochemical industry: Catalytic cracking, hydrogenation unit and high-temperature conveying pipeline
Coal chemical and chemical industry: High-pressure synthetic ammonia and methanol production pipeline
Machinery manufacturing: High-pressure hydraulic pipeline, high-strength structural parts
Other fields: Low-temperature engineering, industrial furnace pipeline and special engineering pipeline
8. Quality Inspection & Surface Treatment
Strict non-destructive testing including ultrasonic testing, eddy current testing and magnetic particle testing to ensure no cracks and impurities.
Hydraulic pressure test conducted strictly according to standard pressure with no leakage allowed.
Available surface treatment: Shot blasting, acid pickling, anti-rust paint coating, black finish and bright annealing finish.
9. Packaging & Delivery
Standard packaging: Both ends equipped with plastic protectors, wrapped with moisture-proof film and woven bag, customized wooden box packaging is acceptable.
Origin: Tianjin, Liaocheng and other first-class steel pipe production bases, complete material certificates and quality guarantee documents provided.
Delivery Cycle: 5-7 days for regular spot goods, 7-15 days for customized products.
Shipment Port: Tianjin Port, Qingdao Port, support FOB, CIF and other international trade terms.
Minimum Order Quantity: Support bulk wholesale and single piece retail.
10. Product Superiority
Alloy steel pipe is the priority pipeline product for high temperature, high pressure, anti-corrosion and low-temperature harsh working conditions. It features long service life, low comprehensive use cost and recyclable material, widely recognized and applied in global industrial engineering projects.
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