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Spiral Submerged Arc Welded Steel Pipe SSAW for Oil Gas Water Transmission Large Diameter High Strength API Standards, Find Details and Price about Spiral Submerged Arc Welded Steel Pipe Welded Steel Pipe from Spiral Submerged Arc Welded Steel Pipe SSAW for Oil Gas Water Transmission Large Diameter High Strength API Standards - Yangtze Steel Group (China) Co., Ltd.