采取不锈钢材质制成的管件，包括不锈钢弯头，不锈钢三通，不锈钢四通，不锈钢异径管，不锈钢管帽等。
Take the pipe made of stainless steel, including stainless steel elbow, stainless steel three, stainless steel four, stainless steel different diameter pipe, stainless steel pipe cap.
模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响，考虑了变注入工况和注汽管偏心结构对热损失的影响。
The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.
管件类： 弯头、三通、四通、活接头、卜芯、大小头、管帽、堵头、内丝、外丝、翻边、异径管。
Pipe series: Elbow, tee, cross, movable joint, Bu core, reducer, pipe cap, choke plug, inside the wire, outside the wire, turned-over edge, increaser etc.
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