ERW Steel Pipe is also called Electric Resistance Welded, it is formed by rolling plate and welding the seam. The weld flash can be removed from the outside or inside surfaces using a scarfing blade. The weld zone can also be heat treated to make the seam less visible. Welded pipe often has tighter dimensional tolerances than seamless, and can be cheaper if manufactured in the same quantities. Large-diameter pipe (25 centimetres (10 in) or greater) may be ERW
产品名称：ERW steel pipe
产品手机链接：http://m.vooec.com/trade_3191083.html
产品网站链接：http://www.vooec.com/sjshow_3191083/