岛国免费毛片在线观看,国产精品国产高清国产AV,少妇人妻无码永久免费视频

国产无套流白浆视频免费,免费观看黄网站在线播放 ,中文字幕无码无遮挡在线看 ,日本免费无遮挡吸乳视频中文字幕

Home | Collection | Contact us

The company has eleven sets of spiral welded steel pipe production unit with international modern levels and a set of production line of modern 3-layer PE Anti-corrosion coatings. The outer diameter(OD) of spiral welded pipe from Φ219mm to Φ3600mm, the wall thickness of spiral welded pipe from 6mm to 25mm, steel grade from A25-X80.

Detailed content

PetroChina Kunlun Gas Pipelines

From 2009 to 2011, we supplied spiral welded pipes for PetroChina Kunlun Gas Laiwu Co., Ltd. and PetroChina Kunlun Gas Haerbin Zhongqing Co., Ltd. and other companies for transportation natural gas pipelines project. The total weight is 9500 tons, the specifications of them are Φ323.9、Φ406.4、Φ508、Φ610, the materials are L245—L390.

Video