Standard: ASTM A106, Nace, Sour service.
Grade: A, B, C
Range of OD outer diameter: NPS 1/8 inch to NPS 20 inch, 10.13mm to 1219mm
Range of WT wall thickness: SCH 10, SCH 20, SCH STD, SCH 40, SCH 80, to SCH160, SCHXX; 1.24mm up to 1 inch, 25.4mm
Range of length: 20ft to 40ft, 5.8m to 13m, single random lengths of 16 to 22ft, 4.8 to 6.7m, double random length with average 35ft 10.7m
Ends procession: Plain end, beveled, threaded
Coating: Black paint, varnished, epoxy coating, polyethylene coating, FBE and 3PE, CRA Clad and Lined.

Standard and grades: ASTM A53 Grade A, B. Type E, F, S
Manufacturing types: Seamless, Welded (ERW), Hot-Dipped Galvanized
Pipe Dimensions Range: NPS 1/8” to 20”
Pipe Schedule Range: SCH 10 to SCH 160 and SCH XXS
Ends: Plain, Beveled, threaded. With couplings.

Our Rectangular Hollow Sections (RHS) combine strength and efficiency for versatile applications. Made from high-grade steel, RHS offers superior load-bearing capacity with minimal weight, ideal for construction, machinery frames, and architectural designs. Its corrosion-resistant finish ensures durability, while easy fabrication allows customization. Available in diverse sizes, RHS delivers cost-effective, eco-friendly performance for modern projects. Choose RHS for reliability and innovation!

Carbon Steel Welded Pipe is a tubular product made by welding carbon steel plates or coils. It is widely used in industries such as construction, oil/gas transmission, and infrastructure projects. Known for its strength, affordability, and versatility, it can withstand moderate pressures and temperatures, making it suitable for various structural and fluid transport applications.

Carbon Steel Pipe Schedule 40 (Sch 40) refers to a common type of steel pipe with a specific wall thickness defined by ANSI standards, indicating moderate strength and suitable for general plumbing, structural uses like handrails, and fire sprinkler systems, with wall thickness varying by pipe size but maintaining a consistent outer diameter (OD) for common sizes like NPS 2-inch. It's made from iron alloyed with carbon, often ASTM A53 grade, and offers a balance of strength, durability, and cost.

Black steel pipe is a strong, uncoated carbon steel pipe, often called "black iron pipe," used for gas, steam, air, and non-potable water lines due to its durability and cost-effectiveness, but it's unsuitable for drinking water because it rusts easily and can contaminate water. Its signature black finish comes from a light mill scale or lacquer, offering minimal corrosion protection, making it ideal for dry, industrial, and high-pressure applications like fire sprinklers, HVAC, and structural support.

API 5L pipes are globally recognized standards for steel pipelines used in the oil, gas, and water industries, governed by the American Petroleum Institute (API). Manufactured in seamless and welded forms (e.g., ERW, SSAW, LSAW), they adhere to strict specifications for material strength, chemical composition, and toughness, ensuring reliability in critical applications. Graded from A25 to X80 (and higher), API 5L pipes cater to varying pressure and temperature requirements, with higher grades like X65 and X70 favored for long-distance

ASTM A519 and A179 are carbon steel pipe specifications, but they serve different primary functions: ASTM A179 is for seamless cold-drawn low-carbon steel tubes for heat exchangers/condensers, focusing on heat transfer efficiency, while ASTM A519 covers broader seamless carbon & alloy mechanical tubing (round, square, etc.) for structural/mechanical uses like oil drilling, often with specific grades (e.g., Grade 1012). A179 is specific to heat transfer, while A519 offers wider grades for mechanical tasks, though some A519 grades (like 1012) are mild steel used in similar applications.

ASTM A333 steel pipes are specifically designed to deliver outstanding performance in low-temperature environments, making them a top choice for industries such as oil and gas, petrochemical, and cryogenic applications. These pipes, crafted from high-quality carbon steel, exhibit excellent toughness and resistance to brittle fracture, ensuring reliable operation even at temperatures as low as -150°F (-100°C). Available in seamless and welded types, they meet stringent ASTM standards, providing a durable and cost-effective solution for transporting fluids under extreme cold conditions.

ASTM A691 Welded Steel Pipe is a specification for electric-fusion-welded carbon and alloy steel pipes tailored for high-pressure, high-temperature service. Commonly used in industries like power generation, petrochemicals, and oil/gas, it provides superior strength, durability, and resistance to harsh conditions, ensuring reliable performance in critical applications.

Zhongxi Metal offers ASTM A672 welded steel pipes with high strength, excellent weldability, and corrosion resistance. Ideal for construction, oil & gas, and mechanical engineering. Contact us for competitive prices.

ASTM A135 Welded Steel Pipe is a standard specification for electric-resistance-welded steel pipes intended for conveying gas, vapor, water, or other liquids. It provides adequate strength and corrosion resistance for general applications, making it suitable for low- to medium-pressure systems in various industries.