35, Pallanji house, Shop No.1 Khetwadi Back Road, Raja Ram Mohan Roy Road, Grant Road (E), Mumbai - 400004.
+91 9372214454|   info@welwinpipes.com|   www.welwinpipes.com

LOOSE / LAP JOINT FLANGES


is a dynamic group, which was established over a decade ago to cater to growing demands of Loose / Lap Joint Flanges standards in ASME / ANSI B16.5 Flanges,ASME/ANSI B16.47 etc in all materials like Stainless Steel , Carbon Steel & High Nickel Alloys. We Manufacture, Export and Supply Flanges which meets with national and international quality standards and producing base which owns equipments conforming to international technical level and is well equipped with a whole set of advanced plasma refining equipments.

We export our high quality Loose / Lap Joint flanges to Kuwait, Egypt and Qatar.

SPECIFICATIONS OF LOOSE / LAP JOINT FLANGES

Range: ½” (15 NB) to 48” (1200NB)
Pressure Ratings: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75

 

DIMENSIONS OF LOOSE / LAP JOINT FLANGES

NPS 1/2 - ID = 22.9 - r = 3

Class 150 300 400 600 900 1500 2500
Diameter - A 30 38 38 38 38 38 43
Diameter - D 90 95 95 95 120 120 135
Thickness - B 11.2 14.3 14.3 14.3 22.3 22.3 30.2
Diameter - G 35.1 35.1 35.1 35.1 35.1 35.1 35.1
Diameter - K 60.3 66.7 66.7 66.7 82.6 82.6 88.9
Height - H 16 22 22 22 32 32 40
Bolt Holes 4 4 4 4 4 4 4
Diameter - L 15.9 15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Diameter x Length
Diameter (in) 1/2 1/2 1/2 1/2 3/4 3/4 3/4
Length (mm) 55 65 75 75 110 110 120

 

NPS 3/4 1 2 3 4 6 8 10 12 14 16 18 20 24

Dimensional Tolerances of Lap Joint Flanges ASME B16.5

Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
Inside Diameter
not applicable
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
not applicable
Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0
Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm

PACKAGING OF LOOSE / LAP JOINT FLANGES

Packaging: Loose / Lap Joint Flanges is sleeved into plastic bag individually, ten pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.

Prevent any damage.
During transportation items are tagged, packed in plastic bags and closed in carton boxes or seaworthy wooden cases.

plywood case,pallet and according to customer's requirment

Marking: Loose / Lap Joint Flanges are marked with alloy name, outside diameter, wall thickness and heat number. Additional information like standard and alloy numbers can be added on request.

 

MATERIALS OF LOOSE / LAP JOINT FLANGES

Stainless Steel Loose / Lap Joint Flanges

Carbon Steel Loose / Lap Joint Flanges

Duplex & Super duplex Steel Loose / Lap Joint Flanges

Nickel Alloy Loose / Lap Joint Flanges

Inconel Loose / Lap Joint Flanges

Incoloy Loose / Lap Joint Flanges

Hastelloy Loose / Lap Joint Flanges

Monel Loose / Lap Joint Flanges