This factory production sells 219-1420X5-14MM (spiral steel pipe), the product uses the American Lincoln welding machine entire line automatic two-sided submerged-arc welding to meet, execution international GB/T9711.1--1997 and petroleum natural gas profession standard SY/T5037-2000,SY/T5040-92 carries on the production, and has X灏 [Detailed]
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Link：Plastic mold