jinlong5 发表于 2020-8-11 16:11:20

ASME BPVC-IIA-SA-231-231M-2017SPECIFICATION FOR CHROMIUM-VANADIUM ALLOY STEEL SP

ASME BPVC-IIA-SA-231-231M-2017
SPECIFICATION FOR CHROMIUM-VANADIUM ALLOY
STEEL SPRING WIRE

admin 发表于 2020-8-11 20:48:32

谢谢您的分享,金币已奖励!

草地飞龙 发表于 2021-2-18 21:57:32

资料很好，感谢论坛，感谢楼主！！
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