We are the producers of the popular category of the Alloy steel Blind Flange has its applications aligned to various industrial platforms. These Blind Flanges are use to seal the ends of the pipelines which ensures proper navigation of the fluid transfer system. This product is made up of the best quality of Alloy steel and which is tested for its hardness and endured strength.

It also exhibits properly placed bolt holes which is used to fit it in the best possible manner into the pipeline. We ensure that we provide the option of providing this product according to the various customized needs of our client which is well appreciated by them as well. Alloy steel Blind Flange is widely used to provide positive closer on the ends of pipes, valves or equipment nozzles.

Apart from this product also facilitates easy access to the line after the installation process is done. Being used to cater to properly planned fluid movement the Alloy steel Blind Flange is used to provide a holistic solution the various needs and requirement of delivering high end output. We provide this product at leading industrial rates which is beneficial for our customers to a great extent.

Our Live Stock Alloy Steel Flanges

Range of Flanges

Process of manufacturing

Our manufacturing process is highly sophisticated and is divided into various departments supervised by experienced industry experts. We use only quality raw materials that are procured from only established and reliable vendors. We have adopted rigorous quality control practices and procedures to ensure the production of only quality products matching industry standards and parameters.

1. Raw Material

  • Raw Material Check
  • Quantity Check
  • Visual & Dimension Check

2. Material Inspection

  • Chemical Analysis Check
  • Preservation Analysis Certificate

3. Material Cutting

  • Weight Measuring
  • Cut Surface Check
  • Marking

4. Flange forging

  • Material Grade Check
  • Weight Measuring
  • Temperature Control

5. Heat Treatment

  • Normalizing
  • Tempering, Q.T
  • Solution Treatment
  • Mechanical Test

6. Forging Rolling

  • Material Grade Check
  • Weight Measuring
  • Temperature Check
  • Dimension Check

7. Final Inspection

  • Dimension size inspect
  • Visual Test
  • Nondestructive Test

8. Rust Prevention

  • Preserve Check
  • Marking on the flange
  • Tectyl 506or Pickling or etc. Coating

9. Well Packing

  • Packing Spec. Check
  • Packing Inspection
  • Delivery

Requirements are valid for normal situation, in special you have to contact us to introduce.

Our machining and assembly operations have a complete line of metal removal equipment including turning, boring, milling, drilling, grinding, polishing, welding and have testing equipment to manufacture forged steel fittings and valves. This facility also contains all the necessary equipment to support these operations including work holding and cutting tool needs.

Raw Materials

The usual materials of flanges include stainless steel, carbon steel, aluminum and plastic.Beginning with this process,the system controls the quality of all incoming materials as per the raw material test certificate of the material. Mild Steel Flanges ( MS ) are of premium quality that ensures high durability, strength and resistivity to varied non-supporting conditions. Also, checking in each size for chemical and physical properties of these materials at Government approved laboratory.

Flange materials according to ASTM

Dimensions from carbon steel and stainless steel flanges are defined in the ASME B16.5 standard. The material qualities for these flanges are defined in the ASTM standards.

The Rust Prevention for Steel Flanges

The normal rust prevention treatment for steel flanges include yellow (Golden) paint Coating, black paint coating or black phosphating treatment, varnish paint coating, varnish antirust oil coating, electro galvanizing coating (Cold), hot dip galvanizing coating etc.

The Packing Works for Steel Flanges

Steel flanges must be packed with seaworthy packing method then delivery to customers, usually the packing way include wooden box, wooden pallet, iron & steel cage, iron & steel pallet etc. Because of the normal wooden boxes or wooden pallets have to do fumigation treatment, we usually use plywood pallet or plywood case or box to pack steel flanges without fumigation treatment. Whatever plywood or iron & steel packing way, they must be seaworthy, strong, waterproof and easy for loading and unloading.

Marking on the flange

Shipping mark stick to outside of package. Following shall be marked on flange body

  • Manufacturer logo
  • ASTM material code
  • Material Grade
  • Service rating (Pressure-temperature Class))
  • Size
  • Thickness (Schedule)
  • Heat No
  • Special marking if any QT (Quenched and tempered) or W (Repair by welding)

Dispatch

The final process of dispatch is the most tedious of all , and heavy duty cranes are used for it. With the help of our extensive delivery chain we can ensure time critical deliveries at the behest of our esteemed clients. We are indeed privileged to be able to serve and live upto their expectations and occupy unparalleled postion of Flange makers in China.

Standards

  • ANSI
  • JIS
  • DIN
  • BS4504
  • SABS1123
  • EN1092-1
  • UNI
  • AS2129
  • GOST-12820

Test Certificate

  • TUV INDIA PVT. LTD (TUV)
  • BUREA VERITAS INDUSTRIAL SERVICES (INDIA) PVT. LTD (BVIS)
  • TWINAR ENGINEERS
  • SIGNATE ENGINEERS PVT. LTD
  • BAX COUNSEL INSPECTION BUREAU PVT. LTD

Marking & Packing

No Fumigate or Fumigate Plywood/Wood Pallet or Case

Grades

Alloy Steel Blind Flanges :

ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Copper Alloy Steel Blind Flanges :

ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200

Nickel Alloy Blind Flanges :

ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020).

Applications

  • Blind Flanges uses in Oil and Gas Pipeline
  • Blind Flanges uses in Chemical Industry
  • Blind Flanges uses in Plumbing
  • Blind Flanges uses in Oil & Gas Industry