黑铁管 非涂锌管

blackpipe  detail>>

黑铁管；非镀锌管

black pipe  detail>>

黑铁管

black iron pipe black pipe  detail>>

涂锌

zinc coating  detail>>

锌管

zinc pipe  detail>>

熔焊的黑铁管线规范

standard specification for steel line pipe black furnace-butt-welded  detail>>

铁管

iron pipe; iron tube  detail>>

喷涂锌

zinc spraying  detail>>

涂锌层

zinc coating  detail>>

镀锌管

galvanized conduit galvanized pipe galvanized tube  detail>>

非涂布纸

uncoated paper  detail>>

非涂料纸

uncoated paper  detail>>

非涂漆表面

unpainted surface  detail>>

三极管非门

transistor not gate  detail>>

喷涂涂锌

spray galvanizing  detail>>

锌 涂锌于

zinc  detail>>

黑铁板

black iron plate  detail>>

黑铁棒

black metal bar  detail>>