Pipe Fittings Supplier India | Elbows Tees Reducers | CS SS304 SS316 CI UPVC | Butt Weld Socket Weld Screwed | ASME B16.9 B16.11 | KELOR

Description

Pipe Fittings Supplier India | Elbows / Tees / Reducers / Couplings / End Caps / Crosses | CS / SS304 / SS316 / CI / UPVC | BW / SW / Screwed / Flanged | ASME B16.9 B16.11 | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Materials: CS / SS304 / SS316 / CI / CPVC / UPVC
Standards: ASME B16.9 / B16.11 / IS 1538 | Sizes: DN15–DN600

Pipe Fittings Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of Pipe Fittings — elbows (45°/90° long radius/short radius), tees (equal and reducing), reducers (concentric and eccentric), couplings and sockets, end caps, and crosses — Carbon Steel (ASTM A234 WPB / A105), Stainless Steel SS304 (A403 WP304 / A182 F304), SS316 (A403 WP316 / A182 F316), Cast Iron (IS 1538), CPVC, and UPVC — butt weld (ASME B16.9), socket weld and screwed (ASME B16.11 Class 2000/3000/6000), and flanged — DN15 to DN600 — Schedule 40 / 80 / 160 / XXS — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

End Connection Selection Guide — Butt Weld vs Socket Weld vs Screwed vs Flanged

The end connection type is the first decision on every pipe fitting material requisition. Each type has a specific size range, pressure class, and application where it is the correct specification. Mixing end connection types within the same piping class is a common procurement error that creates installation problems on site.

Fitting Types — Technical Details

Elbows — 45° and 90°

Elbows change the direction of a pipeline. The most important distinction for Indian process plant piping is between Long Radius (LR) and Short Radius (SR) 90° elbows. A Long Radius elbow has a centreline radius of 1.5 times the pipe diameter — it produces lower pressure drop, is easier for pigs to pass through in piggable lines, and causes less turbulence and erosion at the bend. A Short Radius elbow has a centreline radius equal to the pipe diameter — it is more compact but produces higher pressure drop and erosion at the bend. LR elbows are standard for all process plant piping in India. SR elbows are specified only where space is severely constrained and the process engineer has accepted the higher pressure drop. For slurry, abrasive, or erosive service, always specify LR — SR elbows in slurry service erode rapidly at the outer radius of the bend.

Tees — Equal and Reducing

Tees branch a pipeline. An equal tee has the same bore on all three connections — run in, run out, and branch. A reducing tee has a smaller bore on the branch connection than the run. For most Indian process plant branch connections, a reducing tee is specified — the main pipeline continues at full bore and a smaller branch line offtakes for instrument connections, sample points, chemical injection, or smaller process branches. Specify the tee as run size × branch size — for example “150×80 BW tee CS ASTM A234 WPB” means a 150mm run with 80mm branch, butt weld, carbon steel.

Reducers — Concentric and Eccentric

Reducers connect pipe sections of different bore. Concentric reducers have both ends on the same centreline — correct for vertical pipelines and horizontal gas or vapour lines where liquid accumulation is not a concern. Eccentric reducers have one flat side — the centreline of the two ends is offset. The critical application rule for eccentric reducers: on pump suction lines, always specify eccentric reducer with flat side up (FSU). A concentric reducer on a pump suction line creates a high point where vapour or air can accumulate — this pocket causes cavitation in the pump. An eccentric reducer FSU maintains a continuous downward slope on the top of the pipe, preventing air pockets. This is one of the most frequently misspecified fittings on Indian process plant projects.

Couplings and Sockets

Couplings connect two pipe sections of the same bore. A full coupling connects two pipe ends — pipe slides into both ends (socket weld) or screws into both ends (threaded). A half coupling has one socket/thread and one plain end that is welded directly to a pipe — used for branch connections where a full tee would be oversized. Half couplings are standard for small bore instrument tapping points on main process lines — the half coupling is welded to the main pipe and the instrument root valve screws into the half coupling.

End Caps

End caps permanently or temporarily close a pipe end. A butt weld cap is welded to a pipe end — permanent termination of a piping run. A threaded cap screws onto a threaded pipe end — used for temporary blanking of drain connections or vent points that are normally plugged but opened for maintenance. On any piping system with future expansion provisions, a threaded plug or cap at the branch termination allows connection of future equipment without cutting and welding.

Crosses (Four-Way Fittings)

Crosses provide two branch connections at 90° from the same point on the run pipe. Less common than tees in Indian process plant piping — primarily used for utility distribution headers, instrument manifold connections, and small bore utility cross-connections where two branch lines leave from the same point. Crosses in larger sizes create stress concentration at the four-way joint — piping engineers often prefer two separate tees over one cross for structural reasons in process plant piping.

Material Selection Guide

Technical Specifications

Applications in Indian Industries

• EPC process plant projects — CS ASTM A234 WPB butt weld fittings — elbows, tees, reducers — Schedule 40/80 — ASME B16.9 — the bulk of any Indian process plant piping MR is CS BW fittings — chemical, petrochemical, fertiliser, refinery, power plant — supplied with MTC (ASTM A234 heat certificates) and dimensional inspection report
• Pharmaceutical and food processing plants — SS316 ASTM A403 WP316 butt weld fittings — electropolished internal surface — Ra 0.8 micron or better — ASME BPE standard on request — hygienic fittings with crevice-free weld joints — pharma API plants, sterile manufacturing, food and beverage CIP systems
• Chemical plants — Ankleshwar, Vapi, Dahej — SS316 or CPVC fittings depending on chemical — CPVC screwed fittings for HCl and H2SO4 dilute service where SS316 is too expensive — SS316 BW for concentrated acid and alkali — reducing tees and couplings for chemical injection points on main process lines
• Water treatment and municipal projects — CI flanged IS 1538 PN16 — elbows, tees, reducers — large bore DN150–DN300 — WTP distribution headers, pump station piping, filter backwash headers — economical for non-corrosive water service at medium pressure
• Building services and MEP — CS or CI screwed BSP fittings — DN15–DN50 — water supply, fire hydrant, HVAC chilled water, compressed air utility — half couplings for instrument tapping points — end caps for future connection provisions
• Oil and gas gathering systems — CS ASTM A234 WPB / WP11 BW fittings — ASME B16.9 — Schedule 80/160 — high pressure gas gathering, crude oil trunk lines — with RT (radiographic testing) of welds — API 5L pipe matched schedule fittings

Related Products — Krishna Industries (KELOR)

• Threaded Flanges — for connecting pipe fittings runs to flanged valves and equipment — slip-on, weld neck, blind, socket weld flanges — ASME B16.5 Class 150/300
• Stud Bolts — for flanged joint assembly — ASTM A193 B7 studs with A194 2H nuts — supplied with flanges and gaskets as a complete flanged joint package
• Hex Bolts — for flanged connections at lower pressure utility service — ASTM A307 hex bolts — IS 1367 grade 8.8
• WCB Globe Valve — for throttling service in CS process plant piping systems — same material standard as CS BW pipe fittings — compatible piping class
• SS Needle Valve — for instrument root connections on SS process lines — pairs with SS half coupling branch connection

Frequently Asked Questions

1. Why must I specify eccentric reducer (flat side up) on pump suction lines?

On horizontal pump suction lines, a concentric reducer creates a high point at the top of the pipe where the pipe size reduces. Vapour or dissolved gas in the liquid can accumulate at this high point and form a gas pocket. When this gas pocket reaches the pump suction eye it causes cavitation — violent implosion of vapour bubbles that erodes pump impeller and casing rapidly. An eccentric reducer with flat side up maintains the top of the pipe as a continuous downslope — there is no high point and no pocket for gas to accumulate. This is a standard piping engineering rule that is frequently missed on small bore pump connections in Indian industrial projects. Always specify eccentric reducer FSU on any horizontal pump suction line where a size reduction is required.

2. What is the difference between ASME B16.9 and ASME B16.11?

ASME B16.9 covers factory-made wrought butt welding fittings — elbows, tees, reducers, caps in all sizes from DN15 to DN600 — for welding to pipe by butt weld joints. ASME B16.11 covers forged fittings — socket weld and threaded — for small bore piping DN8 to DN100 — in pressure classes 2000, 3000, and 6000. The two standards cover different end connection types and size ranges and are not interchangeable. On any Indian process plant material requisition, the piping class document will specify which standard applies for each line class — Class A (low pressure utility) typically uses B16.11 Class 2000 screwed, Class B/C (medium pressure process) uses B16.9 BW and B16.11 Class 3000 SW for small bore.

3. When should I use long radius versus short radius elbows?

Long radius (LR) 90° elbows are standard for all process plant piping in India — specify LR unless SR is specifically required and approved by the piping engineer. LR elbows (radius = 1.5D) produce lower pressure drop, less turbulence, less erosion at the bend, and allow pipeline pigs to pass for piggable systems. Short radius (SR) elbows (radius = 1D) are more compact but produce significantly higher pressure drop and erosion — particularly in abrasive slurry, high velocity gas, or erosive service where SR elbows fail rapidly at the outer radius. For slurry service, specify LR elbows and consider using 45° elbows in two turns instead of one 90° SR elbow where the pressure drop and erosion of SR is unacceptable.

4. What documents are supplied with pipe fittings orders?

Standard supply includes GST invoice with HSN code, and packing list. On request: Material Test Certificate (MTC) — ASTM heat certificate for CS A234 WPB or SS A403 WP316 — showing chemical composition and mechanical properties with heat number traceability. Dimensional inspection report for critical orders. Third party inspection (TPI) release note (Lloyds, BV, DNV) for EPC project orders specifying TPI. Hydrostatic test certificate where pressure testing of fittings is specified by the project.

5. What is the MOQ?

MOQ is 10 Nos. EPC and process plant project orders — typically 50 to 5,000+ Nos across fitting types, sizes, and schedules — with MTC, dimensional report, and GST invoice. WhatsApp fitting type list, material standard, size list, schedule/wall thickness, end connection type, pressure class, and quantity for project pricing within 2 hours.

Conclusion

Krishna Industries (KELOR) supplies Pipe Fittings for Indian EPC, process plant, chemical, pharma, water treatment, and building services projects — elbows (45°/90° LR/SR), tees (equal/reducing), reducers (concentric/eccentric), couplings, end caps, and crosses — Carbon Steel (ASTM A234 WPB / A105), SS304 (A403 WP304 / A182 F304), SS316 (A403 WP316 / A182 F316), Cast Iron (IS 1538), CPVC, UPVC — butt weld ASME B16.9, socket weld and screwed ASME B16.11 Class 2000/3000/6000, flanged — DN15 to DN600 — Schedule 40 to XXS — MTC, dimensional report, TPI on request — GST invoice — Pan India dispatch from Ahmedabad. WhatsApp fitting type, material, size, schedule, and quantity for project pricing within 2 hours.