浇铸聚氨酯的一个关键性优势是它可以在成型过程中和过程后与金属，复合材料或塑料组件有效粘接。
One crucial advantage of cast polyurethane is that it can be bonded effectively with metals, composites or plastics during or after the moulding process.
201不饱和聚酯树脂是专门为离心浇铸成型玻璃钢管道(HOBAS管)设计的结构层树脂，是低粘度，中等反应性的邻苯型树脂。
HCH-201 unsaturated polyester resin is designed for centrifugal casting molding glass pipe (HOBAS pipe) design of the structure layer resin is a low viscosity, medium reactivity of o-benzene resin.
论述球铁高压燃气闸阀的概况、设计要点、壳体浇铸工艺性的改进和试验方法。
The general description, main points of design, technological improvements in valve body casting and test methods of the said valve are discussed.
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