Worldwide Pipe Meets Industry Standards
English Views: 0 Author: Site Editor Publish Time: 2025-09-22 Origin: Site
Black steel pipe refers to carbon steel pipe with a black oxide layer or coating on its surface. It can be categorized into seamless black pipe and welded black pipe. Due to its cost-effectiveness and reliable pressure-bearing performance, black pipe is widely used in structural support, mechanical frameworks, gas and non-potable water conveyance, and industrial equipment fluid pipelines.
Ⅰ. The performance and advantages of the Black steel pipe
The black steel pipe retains the high strength and good machinability of carbon steel, with superior impact resistance and pressure resistance compared to some non-metallic pipes; the black oxide or anti-rust oil treatment on the surface can provide basic corrosion protection for a short term, making it convenient for on-site welding and secondary processing.
Ⅱ. Common specifications and standards
Common specifications cover diameters DN15 to DN600 and larger, with wall thicknesses primarily including SCH40, SCH80, STD, and XS; common materials/standards include ASTM A53, A106, API 5L, and corresponding national standards GB/T. Lengths are available in 6 meters, 12 meters, and custom-cut sizes, with end finishes that can be chamfered or threaded.
Ⅲ. Typical applications of the Black steel pipe
Construction engineering: scaffolding, load-bearing columns and support pipes; oil and gas: ground supporting pipelines and brackets; machinery manufacturing: hydraulics, gas transportation and equipment support; municipal and industrial: non-potable water supply and drainage, cooling water pipelines (anti-corrosion treatment is required).
Ⅳ. Quality control and procurement considerations
Ensure that suppliers conduct raw material inspections, dimensional tolerances, non-destructive testing of welds, and hydrostatic tests; sign delivery and acceptance standards, clearly defining packaging, length tolerances, and end face treatment; conduct sample trials for critical engineering recommendations first.
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