25*1.8熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.7熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.6熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.5熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.4熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.3熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.2熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.1熱鍍鋅牛頭牌大棚管GB/T3091-2015
25*1.0熱鍍鋅牛頭牌大棚管GB/T3091-2015
22*1.2熱鍍鋅牛頭牌大棚管GB/T3091-2015
22*1.1熱鍍鋅牛頭牌大棚管GB/T3091-2015
22*1.0熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*2.0熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.8熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.7熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.6熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.5熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.4熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.3熱鍍鋅牛頭牌大棚管GB/T3091-2015
20*1.2熱鍍鋅牛頭牌大棚管GB/T3091-2015