Where did these 113 and 120 tubes come from?

2019-07-09View Original

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Where did these 113 and 120 tubes come from?

Reply #22019-07-09

It's hard to do it, either 114.3 or 121. It may be a clerical error, it is not in GB/T17395.

Reply #32019-07-09

HG flanges generally use HG 20553 Ia series. See its preparation instructions on page P486. It is so thick that we generally use forged thick-walled pipes.

Reply #42019-07-09

What you are talking about should be the size of the reinforcement tube. . . . . .

Reply #52019-07-10

Rear wall tube processing, or forging processing.

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