供应大口径矩管

矩形管 标准 (GB/T6728-2002) or ASTM A500 or EN10219 100x300x(6-12)mm 200x300x(6-14)mm 250x450x(6-16)mm 150x200x(4-12)mm 200x350x(6-14)mm 250x500x(8-16)mm 150x250x(4-12)mm 200x400x(6-14)mm 300x350x(8-16)mm 150x300x(5-12)mm 250x300x(6-14)mm 300x400x(8-16)mm 150x350x(6-12)mm 250x350x(5-14)mm 300x450x(8-16)mm 200x250x(5-12)mm 250x400x(6-16)mm 300x500x(8-16)mm

企业名片