We are well known providers of the Alloy steel Lapped Joint flange which has multiple industrial applications aligned to it. Our Lap Joint Flanges has a curved radius which increases its compatibility to a great extent. Our expert product designers understand the needs of our clients and thus have devised a perfect plan to develop lap joint flange which are not welded or fixed. These flanges are designed to rotate to ensure appropriate alignment when attached to the base object.

We ensure that this product is put through a stringent quality check process which is highly beneficial. Our qualified professionals ensure that this product has a flawless design which enables it to deliver to the utmost. This product is tested for its tensile strength and provides a holistic solution for the clients.

Our client centric approach ensures high end satisfaction and also sheds light on the various aspects defining the long-lasting capability of the product. Our products offer an excellent thermal conductivity and they are non-corrosive in nature which is widely appreciated by our clients.

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)
  • SIGNATE ENGINEERS
  • INDIAN REGISTER OF SHIPPING
  • DET NORSKE VERITAS (DNV)

Marking & Packing

No Fumigate or Fumigate Plywood/Wood Pallet or Case

Grades

Alloy Steel Lap Joint Flanges :

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

Copper Alloy Steel Lap Joint 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 Lap Joint 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

  • Agriculture
  • Bearings
  • General engineering
  • Automotive
  • Hydraulics
  • Railway
  • Mining
  • Construction
  • Aerospace
  • Windpower
  • Chemical
  • Medical
  • Defense