ASTM A312 Stainless Steel Pipe Annealed Pickled for Oil and Gas

ASTM A312 Stainless Steel Pipe - Annealed & Pickled for Oil & Gas

MTSCO Beyond Just a Supplier

MTSCO is a leading “ factory complex” metal service provider. We hold an investment stake in HUXIN PIPE, which boasts 35 years of specialized expertise. MTSCO and all partner factories are ISO-certified. All products comply with international standards such as PED and M650. We deliver one-stop supply of metal piping systems to global clients. Seeking reliable seamless pipes for your oil and gas projects? Contact MTSCO today for a customized quote and tailored solutions!

How We Craft a Pipe?

Raw materials for ASTM A312 stainless steel pipes are sourced from major manufacturers like Baosteel and TSINGSHAN. After rigorous cold rolling, pipes undergo critical bright annealing. This process effectively eliminates internal stresses, refines grain structure, and restores material corrosion resistance and mechanical properties. Subsequently, the pipes undergo acid pickling and passivation treatment. This removes surface scale and forms a dense passivation film, significantly enhancing corrosion resistance. HUXIN PIPE equipped with advanced annealing furnaces and pickling lines, ensures every seamless pipe undergoes complete heat treatment and surface finishing for stable, reliable performance.

How Does MTSCO Achieve “Zero-Defect” Quality?

MTSCO implements a comprehensive “3 Quality Inspection” system throughout production. First, we conduct secondary PMI testing on every incoming raw material batch to verify material composition accuracy. Second, during manufacturing, our on-site QC team monitors and records processes according to detailed process cards, ensuring full traceability. Finally, prior to shipment, we conduct 100% inspection covering appearance, dimensions, non-destructive testing (UT/ET), and mechanical property testing. Our dedicated 20-member QC team maintains a permanent presence at partner factories like Huxin, guaranteeing every shipment of seamless pipe delivered to you achieves “zero-defect” delivery.

Chemical Composition

FAQ About ASTM 312 Pipe

Q1: What common material grades do you offer for your ASTM A312 steel pipes?

A1: We primarily supply austenitic stainless steel grades widely used in the oil and gas industry, such as TP304/304L and TP316/316L, as well as super duplex steels and nickel alloys suitable for more demanding environments (e.g., high chloride). All materials can be specified at the time of order.

Q2: How are the pipes protected against corrosion and packaged?

A2: After acid pickling and passivation, plastic caps are applied to both pipe ends to prevent impact damage. Pipes are then packaged in woven bags or wooden crates to ensure safe delivery during long-distance sea transport. MTSCO's professional packaging serves as the first line of defense for your cargo's safety.

Q3: Can special dimensions and materials be customized for oil and gas projects?

A3: Yes. Our close collaboration with our holding factory enables high flexibility. Whether it's special wall thicknesses, non-standard dimensions, or high-performance alloy materials, we provide customized production solutions.