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Seamless Steel Pipe

Seamless steel pipe is a strip hollow steel tube without any weld joint on the surface, which makes it able to suffer more pressure than welded steel pipe. This product is more durable in performance and enjoys a longer lifespan. Up to now, it has been broadly applied in offshore platform, boiler, as well as transportation of water, petroleum, natural gas and others.

Depending on different manufacturing process adopted, it falls into two categories that are cold-drawn seamless steel pipe and hot-rolled seamless steel pipe.

Production Range
1. Cold-drawn seamless steel pipe: 1/2" ~ 6" (DN15 - DN150)
2. Hot-rolled seamless steel pipe: 2"~24" (DN50 - DN600)
3. Wall thickness: 2.0mm~80mm (SCH40, SCH80, XS, SCH160)
4. Length: 5800mm~12300mm

External Coating
Black oil coating, red oil coating, galvanized coating and others depending on customers personalized requests.

Material
1. Carbon steel: ASTM A106/53 GR.B/C, API 5L GR.B/X42/52/X60, DIN ST37.0/ST44/ST52/ST35.8/ST45.
2. Alloy steel: ASTM A333 Grade 5/6, ASTM A335 P11/12
3. Stainless steel: ASTM/ASME A312 WP 304-304L-WP 316-316L-WP 321-321H

Standard
1. Carbon steel: ASTM A106, ASTM A53, ASTM A192, API 5L, API 5CT, DIN2448, DIN17715.
2. Alloy steel: ASTM A333, ASTM A335, ASTM A450, ASTM A530.
3. Stainless steel: ASTM A312, ASTM A269, ASTM A213

Process
1. Cold-drawn seamless steel pipe: Steel billet - - - heating - - - punching - - - head making - - - annealing ­ - - - pickling - - - copper plating - - - cold drawing - - - semi-finished pipe - - - heat treatment - - - straightening - - - hydrostatic test - - - painting - - - marking - - - warehouse entry
2. Hot-rolled seamless steel pipe: Steel billet - - - heating - - - punching - - - three roller skew rolling - - - tube knockout - - - tube diameter reducing - - - cooling - - - semi-finished pipe - - - straightening - - - hydrostatic test - - - painting - - - marking - - - warehouse entry

We can provide different types of steel pipes for your choice. Please feel free to contact us for any question regarding our products. We will reply to you as soon as possible and offer you moderate prices.

Related Names
Fluid Conveyance Tubing | Pipework Fabricator | Structural Material