API tubing pipeline, generally speaking, would be focus on seamless steel pipe. With its special characters, we will use them for the transmission of oil & gas with standard of API 5CT J55/K55/N80/C75/L80/C90/T95/Q125.

With special function for API 5L steel tube, we will still need to focus on the follow factors for the guarantee of the quality of it.

First of all, treatment for pipe end. In general, there are square, beveled for welding ends and NUE/EUE connection. And for square end, it could range from straight cut, saw cut to torch cut.

In addition, for surface dealing. High quality API 5L steel pipeline may go through lightly oiled, hot dip galvanized, varnish coating/anti rust oil, protective coatings and so on.

What’s more, tests such as chemical component analysis, mechanical properties and technical property are necessary for quality insurance.

Finally, we cannot ignore the packing methods. We will adopt ways of protection caps in both end, waterproof paper wrapped, two tags to make sure the demands of customers’.