Ronsco steel 12821 12820 gost st20 a321 flange

This kind of flange is made of steel,and stainless steel,and carbon steel,we have all main standards in the world,you can find what you want in our factory.the measurement from dn 40 to dn 2000.

the measurments:

Our advantage

1. Using the resin sand and coated sand casting technology

2.Add the tempering procedure before entering the processing workshop,

3.Use the CNC lathe and pipeline during the whole process.

4.The disc sealing surface use plasma welding machine welding.

5. Every valve must be tested before being sent out of the factory, only qualified ones can be shipped.

OUR FLANGES FACTORY

*Except the 12820-80 casting flat flange dn10-dn1200 pn6/pn10/pn16/pn25, we can also supply the DIN standard flanges, JIS standard flanges, ANSI standard flange, and kinds of valves.

If you need the Non- standard products ,according to your drawings, we can produce the product, that you most satisfied.

(1)we usually use paking palletized to package our gate valve

(2)we also use plywood cases to package our gate valve

(3)One 20' container can in bulk loaded on 20pcs plywood cases more or less.

(4)We can pack according to specific customer requests.

(5)Customers' logos are available on package of the gate valve.