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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.

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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.

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日本护士╳╳╳hd少妇,日韩网红少妇无码视频香港,久久综合给合久久狠狠狠974,自拍 亚洲 欧美 卡通 另类

日本护士╳╳╳hd少妇,日韩网红少妇无码视频香港,久久综合给合久久狠狠狠974,自拍亚洲欧美卡通另类