Fittings
Thread Content
For example, in the equal-diameter tee DN50*50*50-Ⅰ-8.8-GB12459 (Ⅰ), what do the two “Ⅰ” symbols mean? Also, for pipes with a DN50 size and SCH160 wall thickness of 8.5 mm, which is less than the required 8.8 mm, they are considered non-standard fittings. How should such pipes be purchased?
If it’s not standard, just have the manufacturing factory do it – provide them with the drawings
What about the previous question? What doⅠ or Ⅱ mean?
If you look at standard GB12459, you’ll see that it divides into Series I and Series II, with different outer diameters for these two series. It’s fine to purchase with a wall thickness of 8.8mm; just go to the manufacturer listed
It turns out the outer diameters are different; I’ll go check the standards