Shanghai Aluso Flange Factory established in 1982,is one of the biggest flanges manufacturer in China, we are specialized in the production of forged steel flanges, plate steel flanges etc. We manufacture the flange products according to international standards, such as ANSI/ASME, BS, DIN, EN, JIS, GOST, SABS and so on. We also can manufacture the products as per client’s requirements.
We manufacture the JIS B2220 socket weld flange(SW flange) in the pressure 5K,10K,16K,20K,30K. Our products are widely used in industry fields,like oil, gas & petrochemical, energy & power plant,chemical industrial,shipbuilding & offshore development etc.Haihao Group supply the products with high quality raw materials, the raw materials are supplied by Bao steel group and Shougang steel group which belong to Chinese government.The raw materials can be carbon steel,stainless steel,alloy steel etc.
The JIS B2220 10K socket weld flange dimensions as follows:
| SW Flange Nom-inal Size | Outside diam-eter of flange | Diam-eter of bolt hole centre circle | Diameter of bolt hole | Number of bolt | Nominal desig-nation of thread of bolt | Inside diam-eter | Inside diam-eter | Depth of socket | Thick-ness of Flange | Diam-eter of hub Small diam-eter side | Diam-eter of hub Large diam-eter side | Totle length of flange | Radius of fillet |
| A | D | C | h | d0 | d(18) | S | t | a | b | T | r | ||
| 10 15 20 | 90 95 100 | 65 70 75 | 15 15 15 | 4 4 4 | M12 M12 M12 | 17.8 22.2 27.7 | 12.7 16.1 21.6 | 10 10 13 | 12 12 14 | 23 27 33 | 26 30 36 | 16 16 20 | 4 4 4 |
| 25 32 40 | 125 135 140 | 90 100 105 | 19 19 19 | 4 4 4 | M16 M16 M16 | 34.5 43.2 49.1 | 27.6 35.7 41.6 | 13 13 13 | 14 16 16 | 41 50 56 | 44 53 60 | 20 22 24 | 4 4 4 |
| 50 65 80 | 155 175 185 | 120 140 150 | 19 19 19 | 4 4 8 | M16 M16 M16 | 61.1 77.1 90.0 | 52.9 67.9 80.7 | 16 16 16 | 16 18 18 | 69 86 99 | 73 91 105 | 24 27 30 | 4 4 4 |