Ama-fasteners e-Carbon, gr.4.8, GR.5.8, GR.6.8, GR.8.8, GR.8.9, ASME B18.9, ASME B18.9, ASME B18.9.8, ASME B18.9, ASME B18.9.8, ASX BOLTS ASME B18.8, ASME B18.9.8, ASX BOLT ASME, I-U-Bolt, i-hex socket cap isikulufa, i-hex nut, i-washer ecaba, i-washer yasentwasahlobo.
on - - zhengzhou Huitong Pipeline Equipment Co, Ltd.