ygs67 发表于 2018-2-22 19:58:16

ASTM F2648 F2648M-17

ASTM F2648 F2648M-17 Standard Specification for 2 to 60 inch Annular Corrugated Profile Wall Polyethylene (PE) Pipe and Fittings for Land Drainage Applications

admin 发表于 2018-3-4 21:29:42

谢谢您的分享，金币已奖励!
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