压力钢管制作安装
making and installing penstock
不锈钢制压力容器
pressure vessel made from stainless steel
钢管压力成型
steel pipe stamping forming
钢管压力注浆型抗滑挡墙
steel-tube bored grouting anti-sliding retaining w
钢制压力容器
steel pressure vessel
steel pressure vessels
eel pressure vessel
steel-made pressure vessel
压力钢管
pressure steel pipe
pressure penstock
pressure pipe
steel penstock
steel penstocks
PENSTOCKS
steel bifurcated penstock
pressune steel pipe
high-strength penstock
penstock
penstoek
引水压力钢管
diversion pressure steel pipe
penstock
water pilot pressurized Steel pipe
制冷压力管道
Refrigeration pressure pipe
带保温层压力管道
pressure pipeline with the insulation