J41H-300LB供应J41H-300LB美标法兰截止阀

J41H-16CJ41H-16C铸钢法兰截止阀

J61Y-320P供应J61Y-320P 高温高压针型阀

J49H供应J49H压力针型阀

J13H-320供应J13H-320内螺纹针型阀

GMJ14F供应GMJ14F高密封取样阀

J41W供应J41W不绣钢美标截止阀

J41Tc供应J41Tc陶瓷截止阀

J41H供应J41H高压截止阀

J41W供应J41W直通式截止（节流）阀