Oil Pipeline, API 5L Pipeline

　Oil Pipeline, API 5L Pipeline 　　Model NO.: gas pipeline 　　Technique: Hot Rolled 　　Surface Treatment: Black 　　Section Shape: Round 　　Trademark: Shengtian 　　Origin: China 　　Type: Seamless 　　Material: Carbon Steel - See more at: http://www.strpipeline.com/product/oilpipe/274.html#sthash.cA4MwvRe.dpuf