3087 and 12459 matching problem
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Hello everyone. May I ask that for low-pressure saturated steam pipelines with a pressure of 1.2 MPa, should steel pipes of grade 20 as specified in \"GB-3087-2016 Seamless Steel Tubes for Low and Medium Pressure Boilers\" be used? So, can the matching elbows meet the requirements of GB/T 12459-2017 Steel Butt-Welded Fittings – Types and Parameters?
There are no problems. 12459 is the type standard, and 3087 is the material standard. These two must be used together. For example, if you want to buy an elbow, you first need to tell others what standard parameters should be used for its manufacture, such as outer diameter, wall thickness, curvature, and so on ； At the same time, you also need to tell others what material to use – copper or iron – and 20# of 3087 is the material you need.
In short, there is no problem with this type of matching, but when purchasing elbows, it is essential to specify that seamless elbows meeting standard 12459 are required