SAE Butt-Weld Counterflange for Low Pressure Tubes is designed for welding tubes with wall thickness of Schedule 40 of Nominal Pipe Size.
SAE Butt-Weld Flange is the side with O-grooved surface, while Butt-Weld Counterflange is the side without O-grooved surface (Flat face side),this is the main difference between them. SAE butt weld counterflange is the SAE flange with butt weld connection end, This kind of pipe flange is manufactured according to ISO 6162-1 or SAE J518, it is mainly used to connect two tubes together with its butt weld connection end through the method of butt welding, it is widely used in hydraulic systems in various industries.
As the leading SAE flange manufacturers and suppliers, we produce and provide full range of SAE butt weld counterflanges to our customers in China and abroad countries as Singapore, America, Germany, Vietnam, UAE, Saudi Arabia, France, Australia, Canada, Mexico, Brazil and so on…
What is butt weld counterflange?
Butt weld counterflange is the companion side of the butt weld flange which refers to a kind of pipe flanges with the butt weld end, and butt weld counterflanges are mostly connected to tubes and pipes through butting welding method. The tube or pipe is rested on the face of the flange and it is welded connecting to the flange.
A Butt weld is used to attach two pieces of metal together such as pipes or flanges. Butt weld is the most common type of joint that is used in the fabrication of tubing or piping systems. It is a circumferential weld joint where the molten metal is applied around the joint. The end of the butt weld counterflanges usually need to be beveled to provide easier and better welding. butt weld counterflange is not easily deformed, with well sealed, so they are widely used.
SAE 3000 (code 61) butt weld counterflange Specifications
Our SAE butt weld counterflanges are designed and manufactured as per standards as below.
- ISO 6162-1
This standard is for class SAE 3000 psi flanges, so the SAE 3000 (code 61) butt weld counterflangeis designed in this standard. - SAE J518
SAE 3000 Butt Welding Flange Companion Materials
- Carbon steel SAE butt welding flange: C20, C45, ST52, E355, other steel grades on request.
- Stainless steel SAE butt welding flange: available in 304 (EN/DIN 1.4301), 304L (EN/DIN 1.4307), 316 (EN/DIN 1.4401), 316L (EN/DIN 1.4404), 316Ti(EN/DIN 1.4571), duplex stainless steel flange is also available on request.
Code 61 butt welding counter flange Working pressure
Depends on itself pressure rating and the flange screws used, our SAE butt weld counterflange can be used under different working pressures on requests.
- Class SAE 3000 psi series: the working pressure can be from 35 bar to 350 bar depends on the sizes and the grades of the bolts used. our flange bolts are available in grade 10.9 or grade 8.8.
Code 61 butt weld counterflange Dimensions
As one of the leading SAE flange manufacturers and suppliers, our factory can produce and supply full ranges of SAE butt welding flanges in dimension range from 1/2″ to 5″ (DN15 to DN125).
Here below is our dimensions chart.
Accessories of SAE Butt Weld Flange Companion
Bolts: the bolts of our SAE Butt Weld Flange can be ISO metric or UNC standard, and available in stainless steel and carbon steel on request.
O-ring: The material of the O-ring can be NRB, KFM, Viton and so on upon customer’s request.
Our SAE Butt Weld Flange can be supplied in kits as SAE flange couplings, which is known as SAE-butt weld flange-coupling also.
How to ordering Code 61 SAE Butt Weld Flange?
Customer who want to purchase SAE Butt Weld Flange, need to tell us below information:
- Material of the flange: 304 stainless steel, 316 stainless steel, carbon steel, etc.
- Pressure series: SAE 3000 psi
- flange size: 1/2″ – 5″ (303-311)
- Pipe size: Pipe Outer diameter and wall thickness (Schedule 40).
- With or without 4 bolts & O-ring.
Or customers can simply tell us the ordering code, YLFL-GFS3**-T, 3** stands for the flange size (301 to 311), please refer to the above dimension chart.
| Ordering code: | Carbon Steel | 316L |
| Counter Flange (flat face side) with Metric Screw | YLFL-GFS3**-T | YLFL-GFS3**-T-316 |
| Counter Flange(flat face) with UNC screw | YLFL-GFS3**-TU | YLFL-GFS3**-TU-316 |
DATASHEET
- Detailed technical information of working pressure,nominal flange size, dimensions, bolts, unit weight
| maximum
recommended working pressure |
nominal
flange size |
dimensions | thread | weight | ||||||||||
| kg/cm² | inch | Tube | A | B1 | B2 | C | D | E | F | G | H | Metric | UNC | kg |
| 350 | ¹ ⁄₂”(301) | 21,3×2,8 | 21,5 | 15,7 | 13,0 | 38,1 | 54 | 17,5 | 46 | 36 | 16 | M8 | ⁵⁄₁₆-18 | – |
| 350 | ³⁄₄”(302) | 26,7×2,9 | 28,0 | 20,9 | 19,0 | 47,6 | 65 | 22,3 | 50 | 36 | 18 | M10 | ³⁄₈-16 | – |
| 320 | 1″(303) | 33,4×3,4 | 34,0 | 26,6 | 25,0 | 52,4 | 70 | 26,2 | 55 | 38 | 18 | M10 | ³⁄₈-16 | – |
| 280 | 1¹⁄₄”(304) | 42,4×3,6 | 42,8 | 35,0 | 32,0 | 58,7 | 79 | 30,2 | 68 | 41 | 21 | M10 | ⁷⁄₁₆-14 | – |
| 210 | 1¹ ⁄₂”(305) | 48,3×3,7 | 48,6 | 40,9 | 38,0 | 69,9 | 93 | 35,7 | 78 | 44 | 25 | M12 | ¹ ⁄₂-13 | – |
| 210 | 2″(306) | 60,3×3,9 | 61,0 | 52,5 | 51,0 | 77,8 | 102 | 42,9 | 90 | 45 | 25 | M12 | ¹ ⁄₂-13 | – |
| 175 | 2¹ ⁄₂”(307) | 73×5,1 | 73,0 | 62,8 | – | 88,9 | 114 | 50,8 | 105 | 50 | 25 | M12 | ¹ ⁄₂-13 | – |
| 160 | 3″(308) | 88,9×5,5 | 92,0 | 77,9 | 73,0 | 106,4 | 134 | 61,9 | 124 | 50 | 27 | M16 | ⁵⁄₈-11 | – |
| 35 | 3¹ ⁄₂”(309) | 101,6×5,7 | 103,0 | 90,1 | 89 | 120,7 | 152 | 69,9 | 136 | 48 | 27 | M16 | ⁵⁄₈-11 | – |
| 35 | 4″(310) | 114,3×6 | 115,5 | 102,3 | 99,0 | 130,2 | 162 | 77,8 | 146 | 48 | 27 | M16 | ⁵⁄₈-11 | – |
| 35 | 5″(311) | 141,3×6,6 | 142,0 | 128,1 | 120,0 | 152,4 | 184 | 92,1 | 180 | 50 | 28 | M16 | ⁵⁄₈-11 | – |
