TOBO STEEL GROUP CHINA
| Surface Treatment | Antirust oil coated or passivated |
| Seal Face Finish | Serrated concentric finish 125-250 AARH for bubble-tight gasket seating |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded |
| Pressure Range | Class 150 to Class 2500 (150# - 2500#) |
| Design Standard | ASME B16.5 / ASME B16.47 / EN 1092-1 |
| Packaging Details | Plywood cases or customized |
| Material Grade | ASTM A105 / A182 F304 / F304L / F316 / F316L |
| Delivery Time | 7-30 days |
| Leak Test Method | Hydrostatic test + pneumatic bubble-tight leak test |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 50 Metric Ton/Metric Tons per Month |
| Product Name | Zero Leakage Forged Steel Flange |
| Brand Name | TOBO |
| Place of Origin | China |
| Certification | ISO9001:2015; SGS/BV/ABS/LR/TUV/DNV/API/PED available |
| Model Number | ASME B16.5 CL150-CL2500 RF/RTJ |
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Product Specification
| Surface Treatment | Antirust oil coated or passivated | Seal Face Finish | Serrated concentric finish 125-250 AARH for bubble-tight gasket seating |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded | Pressure Range | Class 150 to Class 2500 (150# - 2500#) |
| Design Standard | ASME B16.5 / ASME B16.47 / EN 1092-1 | Packaging Details | Plywood cases or customized |
| Material Grade | ASTM A105 / A182 F304 / F304L / F316 / F316L | Delivery Time | 7-30 days |
| Leak Test Method | Hydrostatic test + pneumatic bubble-tight leak test | Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 50 Metric Ton/Metric Tons per Month | Product Name | Zero Leakage Forged Steel Flange |
| Brand Name | TOBO | Place of Origin | China |
| Certification | ISO9001:2015; SGS/BV/ABS/LR/TUV/DNV/API/PED available | Model Number | ASME B16.5 CL150-CL2500 RF/RTJ |
| High Light | Zero Leakage Forged Steel Flanges ，Leak Proof Forged Pipe Flanges ，Bubble Tight Seal Forged Flange | ||
Zero leakage forged steel flanges are engineered for pipeline systems where fugitive emissions, gas seepage or product loss cannot be tolerated. A flange joint only performs as well as its sealing surfaces, and every zero leakage forged steel flange we machine starts with a forging that has been fully heat treated and then precision faced to a controlled serrated finish of 125-250 AARH.
This controlled surface texture gives the gasket a positive seating grip, which is the first condition for a bubble-tight joint. Our zero leakage forged steel flanges are available with Raised Face (RF) and Ring Type Joint (RTJ) sealing faces, and each flange is 100% hydrostatically tested before dispatch.
For gas and volatile media service, we recommend RTJ faces matched with RX or BX metal gaskets, and our workshop can supply the complete joint solution including gaskets and stud bolts. Seal face flatness, bolt hole alignment and gasket seating width are inspected one by one so that the assembled joint reaches its designed zero leakage performance.
| Design Standard | ASME B16.5, ASME B16.47, EN 1092-1 |
|---|---|
| Size Range | 1/2" to 48" (DN15 to DN1200) |
| Pressure Rating | Class 150 to Class 2500 |
| Seal Face | RF, FF, RTJ (RX/BX) |
| Face Finish | Serrated concentric, 125-250 AARH |
| Materials | A105, F304/304L, F316/316L, alloy steel |
| Temperature Range | -29°C to 538°C by material grade |
| Testing | 100% hydrostatic, optional pneumatic bubble-tight test |
Every zero leakage forged steel flange is produced under a written quality plan. Incoming material is checked against the mill certificate, forged blanks are heat treated with recorded furnace charts, machined faces are verified with surface comparators, and each zero leakage forged steel flange receives a final hydrostatic test before protection is applied.
We have supplied zero leakage forged steel flanges to gas distribution networks, chemical plants and offshore platforms, and our quality records are open for audit by customers and third-party inspectors at any time.
Zero leakage starts at the seal face. We machine every zero leakage forged steel flange with a controlled serrated finish and verify flatness and finish with surface comparators. Each flange is then 100% hydrostatically tested, and joints can be assembled in our workshop for a pneumatic bubble-tight test before shipment.
For gas and other volatile media we recommend an RTJ face with a metal RX or BX ring gasket. Our RTJ zero leakage forged steel flanges are machined to the groove dimensions of ASME B16.5 and can be supplied together with the matching gasket.
Each batch is supplied with hydrostatic test reports, material certificates to EN 10204 3.1, and heat number traceability. Third-party inspection by SGS, BV, TUV or Lloyds can be arranged before loading.
Yes. We can supply the complete zero leakage joint package, including spiral wound gaskets, RTJ metal rings, stud bolts and nuts, so that the whole connection arrives from one responsible source.
Company Details
Business Type:
Manufacturer,Agent,Importer,Exporter,Trading Company,Seller
Year Established:
1998
Total Annual:
100000-100000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ... TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ...
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