Carbon and Stainless Steel Flange

Octal Flange is engaged in forged steel pipe flange, types in Slip On Flange, Weld Neck Flange, Blind Flange, Lap Joint Flange, Socket Weld Flange, Threaded Flange and etc.

Carbon Steel Flange Material: ASTM A105
Alloy and Stainless Steel Flange Material: ASTM A182

Our Products

Slip on flange also named as SO flange. SO flanges slip over pipes and are designed to bit slightly bigger on the inside than the pipe. 

Weld Neck Flange can relocate stress to the pipes, ensuring a decrease in high-stress concentration at the bottom of the flange.

Blind Flange is a solid plate to block of the end of the pipe. It is connected with a piece that have flanges and bolted together to close pipeline.

About Octal Flange

Octal flange is invented by Octal Steel, the company is concentrating on piping solutions for industrial companies. We are located in China, equipped with multi-base inventory and manufacturing facilities in the south and north of China. We have large in-stock of different material with carbon, alloy, and stainless steel flange and raw material flange plate, which means we can manufacture your specific requirements in the urgent period.

We supply different forged steel flange material standards in ASTM A105, ASTM A182, ASTM A350, ASTM A694, ASTM A516, Manufacturing standards in ASME B16.5, ASME B16.47, ASME B16.36 and etc.

Featured Material

Carbon Steel Flanges

Stainless Steel Flanges

Why Choose Us

Our Vision

We are committed to build a one stop purchase center for flanges, either material and either quantity you need, we will complete the delivery all the time.

  • Prompt offer in 24 hours.
  • Urgent material delivery in 48 hours.
  • Large in-stock near the loading port.
  • Customized dimensions and quantity.

Your Responsible Supply Partner