Check Valves,Dual Plates Wafer Check Valve,Dual Plate Non-Return Valve,Water Butterfly Check Valve ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztongvalve.com Name of product specification Materials Origin price Change Note Seamless tube 25*2.5mm 20# Wuxi 5350 - Less goods / pounds Seamless tube 48*4mm 20# Wuxi 4400 - Pounds Seamless tube 60*4mm 20# Changzhou 4450 - Pounds Seamless tube Ф108*4.5mm 20# Hengyang 4800 - Weight / less goods Seamless tube Ф159*6mm 20# Angang 4900 - Pounds Seamless tube Ф219*8mm 20# Lu Bao 5000 - Pounds Seamless tube Ф219*9mm 20# Cheng Gang 5000 - Pounds Seamless tube 377*10mm 20# Baogang 6320 - Pounds Seamless tube 426*11mm 20# Baogang 6450 - Pounds Welded pipe 4 points * 2.75 (Φ20*2.75) Q235 Hengshui Huayi 3320 - Wall thickness 2.75mm Welded pipe 6 points * 3.25 (Φ25*3.25) Q235 Hengshui Huayi 3360 - Wall thickness 3.25mm Welded pipe 1 inch * 3.25 (Φ32*3.25) Q235 Hengshui Huayi 3600 - Wall thickness 3.25mm Welded pipe 1.2 inch*3.5(Φ40*3.5 Q235 Egang 3700 - Wall thickness 3.5mm Welded pipe 2.5 inch * 3.75 (Φ75*3.75 Q235 Egang 3700 - Thickness 3.75mm Welded pipe 3 inches * 4.0 (Φ88*4.0) Q235 Tangshan Youfa 3850 - Wall thickness 4.0mm Welded pipe 4 inch * 4.0 (Φ114*4.0 Q235 Tangshan Youfa 3820 - Wall thickness 4.0mm Welded pipe 6 inch * 4.5 (Φ165*4.5) Q235 Tangshan Youfa 4150 - Wall thickness 4.5mm