Thick-walled straight seam steel pipe Thick-walled straight-seam steel pipe Thick-walled, straight-walled, straight-walled steel pipe The steel pipe whose outside diameter and wall thickness is less than 20 is called a thick-walled straight seam steel pipe. It is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe, and high-precision structural pipe for automobiles, tractors and aviation. The biggest difference between thick-walled straight seam steel pipe and thin-walled vertical seam steel pipe is the thickness of the steel pipe wall. It is generally believed that the wall thickness/diameter equal to 0.02 is the watershed between thick-walled straight seam steel pipe and thin-walled longitudinal seam steel pipe, and the wall thickness/diameter is less than 0.02 is a thin-walled steel pipe, thicker than a thick-walled straight seam steel pipe, in terms of use, thin-walled steel pipe is mostly used on the pipeline. The thick-walled straight seam steel pipe is mostly used for blanks of hollow parts. Pressure and use on important pipelines. Company abbreviation: Shandong Liaocheng Kunlian Steel Pipe Contact: Bu Lingwei Zhang Bing Tel: 0635-2920880 0635-8577002 8577003 Mobile Number: 18265585123 18266350353 Fax number: 0635-2920880 Bank: China Agricultural Bank Liaocheng Branch Garden South Road Branch Tax Number: 372500552206672 Account number: 405402898358091001 NetEase mailbox: Company website: http://