邯郸市永年区白云膨胀栓厂
Handan Yongnian District Baiyun Expansion Plug Factory
邯郸市永年区白云膨胀栓厂
(DIN 933 - 1987) 主打
material Carbon Steel
grade, rigidity Grade 8.8 (HRC22~34)
Coating black oxide coating