Metal material bending test is an important item when raw materials come to factory in boiler and pressure vessel manufacturing trade.
金属材料的弯曲试验是锅炉压力容器制造行业进行原材料入厂检验的一项主要检查项目。
When the moulding technological test is carried out on the air impulse test moulding machine, the moulding sand employed is the sand used by Nanchang Diesel Factory for high-pressure moulding.
利用气流冲击试验机进行造型工艺试验，使用的型砂为南昌柴油机厂高压造型用砂。
The whole insulation joint is in good condition under soil pressure, specified pipeline operation pressure and factory or field hydraulic test.
在土壤压力、规定的管道操作压力和厂内或现场的水压测试下，整个绝缘接头保持完好。
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