少妇无码太爽了视频在线播放,h动画在线看,一区二区三区无码高清视频,а√最新版资源在线官网

high quality pre galvanized square pipe made in china

1shape: square and rectangular

2. surface : galvanized

4. Zn coating mass :60g~200g/m2

3. Type: welded

4. Technic : ERW(Electrical Resistance Weld)

5. Standard : ASTM ,JIN,DIN ,BS ,GB

6. Grade: Q195,Q235, Q235B

7. Specification : OD: 20*20~600*600mm 20*30-600*800mm

W.T0.6~12MM

8. Length: 6M, according to customers’ requirements

9. certificate :ISO9001:2008