What types of M.S. Flanges does I.S. Engineering Co. manufacture?

I.S. Engineering Co. manufactures: M.S. Flanges (all types), E Table Flanges (IS:1538 Table E), Blind Flanges, Welding Neck Flanges, Socket Weld Flanges, Flat / Slip-On Flanges, Male Female Flanges and Forged Flanges — all in sizes 15mm NB to 600mm NB from IS:2062 mild steel.

What is the size range of E Table Flanges available?

I.S. Engineering Co. manufactures IS:1538 E Table Flanges in sizes from 15mm NB to 600mm NB, in pressure ratings PN6 (6 bar), PN10 (10 bar) and PN16 (16 bar). Custom sizes beyond 600mm NB are available on request.

What pipe sizes do you supply?

M.S. Square Pipes: 10x10mm to 250x250mm (IS:4923 SHS). M.S. ERW Round Pipes: 15mm NB to 300mm NB (IS:1239 and IS:3589). M.S. Rectangular Pipes: Various sizes (IS:4923 RHS). All available in standard or custom lengths.

M.S. Flanges, E Table Flanges,
Pipes & Fittings – Complete Range

Q: What is the difference between Short Radius and Long Radius Elbow Fittings?

Short Radius (SR) Elbow Fittings have a centreline radius equal to the nominal pipe size (1D). They are more compact and used where space is limited. Long Radius (LR) Elbow Fittings have a centreline radius 1.5 times the nominal pipe size (1.5D). They provide a smoother flow path with lower pressure drop and are preferred in most process piping applications.

I.S. Engineering Co. is a direct manufacturer in Mumbai supplying a complete range of M.S. Flanges, IS:1538 E Table Flanges, Blind Flanges, Welding Neck Flanges, Forged Flanges, M.S. Square Pipes, M.S. ERW Round Pipes, Elbow Fittings and Reducer Fittings to industries across India since 1999. All products are IS standard compliant and 100% quality inspected before dispatch.

Direct Manufacturer – No Middlemen IS / ANSI / BS Standards All Standard Sizes Custom Orders Welcome Bulk Supply PAN India

M.S. Flanges – Manufacturer Mumbai

Primary Product M.S. Flanges Manufacturer Mumbai – Mild Steel Flanges 15mm to 600mm NB IS ANSI Standards

M.S. Flanges

Mild Steel (M.S.) Flanges are the core product of I.S. Engineering Co. — manufactured from IS:2062 grade mild steel to IS, ANSI B16.5 and BS 4504 standards. Used to connect pipes, valves, pumps and equipment in industrial piping systems. 100% dimensionally inspected before dispatch. Available in all standard NB sizes for all pressure ratings.

Size Range15mm – 600mm NB

MaterialIS:2062 Mild Steel

StandardIS / ANSI B16.5 / BS

RatingPN6 to PN40 / Class 150–1500

All NB SizesIS / ANSI / BSBulk Supply

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Flanges

Welding Neck Flanges

M.S. Welding Neck Flanges feature a long tapered hub that provides excellent reinforcement and distributes stress uniformly — making them the preferred choice for high-pressure, high-temperature and cryogenic service. The tapered bore matches the pipe bore, reducing turbulence. Standard in oil & gas refineries, petrochemical plants and power stations.

Size Range15mm – 600mm NB

ScheduleSCH 40 to SCH 160 / XXS

StandardANSI B16.5 / IS

RatingClass 150, 300, 600, 900, 1500

High Pressure ServiceOil & Gas / PetrochemANSI B16.5

Get Quote for Welding Neck Flanges

Flanges

Socket Weld Flanges

M.S. Socket Weld Flanges are designed for small bore, high-pressure piping (up to 3" NB). The pipe end is inserted into the counterbore socket and fillet-welded externally — creating a strong, compact joint ideal for hydraulic, steam, chemical and pneumatic service systems where space is limited and pressure is high.

Size Range½" (15mm) to 3" (80mm) NB

RatingClass 3000 / Class 6000

StandardANSI B16.11

ApplicationsHydraulic, Steam, Pneumatic Lines

Small Bore PipingClass 3000 / 6000ANSI B16.11

Get Quote for Socket Weld Flanges

Flanges

Flat / Slip-On Flanges

M.S. Flat Flanges (Slip-On type) are the most economical and widely used flange design. The pipe slides through the bore and is fillet-welded on both the inside and outside faces — easy to align, install and replace. Suitable for low-to-medium pressure water supply, HVAC, general process and utility piping. Available in all standard sizes.

Size Range15mm – 600mm NB

RatingPN6, PN10, PN16

FaceFlat Face (FF) / Raised Face (RF)

StandardIS:6392 / ANSI B16.5

Low-Medium PressureEasy InstallationEconomical

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Flanges

Male Female (M&F) Flanges

M.S. Male and Female Flanges feature interlocking raised and recessed faces — the male raised face fits into the corresponding female recessed groove. This self-centering design ensures perfect pipe alignment and a superior leak-proof seal, especially effective with soft gaskets. Widely used in chemical, pharmaceutical and sensitive process piping where alignment is critical.

Size Range15mm – 300mm NB

TypeMale (MF-M) & Female (MF-F) Pair

StandardIS / ANSI B16.5

ApplicationsChemical & Process Industries

Self-CenteringPrecision MachinedLeak-Proof

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Flanges

Forged Flanges

M.S. Forged Flanges are manufactured by the forging process — compressing heated steel billets under high pressure — resulting in a refined grain structure with superior tensile strength, toughness and fatigue resistance compared to plate-cut flanges. The preferred choice for the most demanding high-pressure, high-temperature critical service in refineries, power plants and petrochemical facilities. Available Class 150 to Class 2500.

Size Range½" (15mm) to 24" (600mm) NB

RatingClass 150, 300, 600, 900, 1500, 2500

ProcessForged & Precision Machined

StandardANSI B16.5 / ASTM A105

Forged SteelCritical ServiceClass 150–2500

Get Quote for Forged Flanges

E Table Flanges (IS:1538) – Specialist Manufacturer

E Table – IS:1538 E Table Flanges IS 1538 Manufacturer Mumbai – IS:1538 Table E Flanges PN6 PN10 PN16 15mm to 600mm NB

E Table Flanges (IS:1538 Table E)

IS:1538 Table E Flanges (E Table Flanges) are our specialist product. Manufactured strictly to Indian Standard IS:1538 Table E, these flanges are the industry standard for Indian municipal water supply, sewage treatment, fire-fighting ring mains, irrigation distribution and industrial process piping where IS compliance is mandated. Available 15mm to 600mm NB in PN6, PN10 and PN16 pressure ratings. Zero rejections from major water authority projects.

StandardIS:1538 Table E

Size Range15mm NB to 600mm NB

Pressure RatingPN6 / PN10 / PN16

Face TypeFlat Face (FF)

IS:1538 Table EPN6 / PN10 / PN16Water / Oil / Gas / FireSpecialist

Get Quote for E Table Flanges

M.S. Pipes – Square, Round & Rectangular

Pipes

M.S. Square Pipes (IS:4923 SHS)

Mild Steel Square Hollow Section (SHS) Pipes manufactured to IS:4923. The most versatile structural steel section — used extensively in construction frameworks, structural fabrication, furniture and interior design, gates and grilles, fencing, vehicle body-building and general engineering. Available in sizes 10×10mm to 250×250mm with wall thickness 1.0mm to 12mm in 3m, 6m or custom lengths.

Size Range10×10mm to 250×250mm

Wall Thickness1.0mm to 12mm

Length3m / 6m / Custom

StandardIS:4923 SHS

IS:4923 SHSStructural / FabricationAll Sizes

Get Quote for Square Pipes

Pipes

M.S. ERW Round Pipes (IS:1239 / IS:3589)

Mild Steel ERW (Electric Resistance Welded) Round Pipes manufactured to IS:1239 and IS:3589 standards. The most widely used piping product in India — suitable for municipal water mains, domestic plumbing, oil & gas transport, fire-fighting ring mains, structural hollow sections and general industrial fluid handling. Available in Light, Medium and Heavy weight series in black (bare) and galvanized finish.

Size Range15mm NB to 300mm NB

Weight SeriesLight (L) / Medium (M) / Heavy (H)

Length6m Standard / Custom Available

StandardIS:1239 / IS:3589 ERW

IS:1239 / IS:3589 ERWBlack / GalvanizedWater / Plumbing / Structural

Get Quote for Round Pipes

Pipes

M.S. Rectangular Pipes (IS:4923 RHS)

Mild Steel Rectangular Hollow Section (RHS) Pipes manufactured to IS:4923. Rectangular sections provide greater bending strength in one direction — ideal for structural beams, support frames, machine beds, industrial equipment frames, gates, conveyors and partition structures. Available in a comprehensive range of sizes with wall thickness 1.5mm to 10mm in 6m or custom lengths.

Size RangeVarious Standard RHS Sizes

Wall Thickness1.5mm to 10mm

Length6m Standard / Custom

StandardIS:4923 RHS

IS:4923 RHSStructural BeamConstruction

Get Quote for Rectangular Pipes

Industrial M.S. Pipe Fittings

Fittings

Elbow Fittings (45° & 90°)

M.S. Elbow Pipe Fittings change the direction of fluid or gas flow in a piping system. Supplied in 45° and 90° configurations in Short Radius (1D) for compact installations and Long Radius (1.5D) for lower pressure drop in process piping. Manufactured from M.S. pipe by hot induction bending or seamless process. Butt weld (BW) ends standard.

Angles45° and 90°

TypesShort Radius (1D) / Long Radius (1.5D)

Size Range15mm NB to 300mm NB

StandardANSI B16.9 / IS

45° / 90°SR (1D) & LR (1.5D)ANSI B16.9 / IS

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Fittings

Reducer Fittings (Concentric & Eccentric)

M.S. Concentric Reducers connect two pipes of different bore sizes with both centrelines aligned — used in vertical piping or process piping where centreline alignment is required. M.S. Eccentric Reducers keep one face flat — flat-side-up at pump suctions to prevent air pockets, flat-side-down at pump discharges. Both types available in all standard sizes to ANSI B16.9 / IS.

TypesConcentric (CON) & Eccentric (ECC)

End TypesButt Weld (BW) / Socket Weld (SW)

Size RangeAll Standard Sizes Available

StandardANSI B16.9 / IS

ConcentricEccentricBW / SW EndsANSI B16.9

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Fittings

Tee Fittings (Equal & Reducing)

M.S. Tee Pipe Fittings create a branch connection in a piping system — the most common fitting for dividing or combining flow. Equal Tees have all three outlets the same size (branch = run). Reducing Tees have a smaller branch outlet. Available in butt weld ends to ANSI B16.9 in all standard sizes. Used in water, oil & gas, chemical and construction piping.

TypesEqual Tee / Reducing Tee

End TypeButt Weld (BW)

Size Range15mm NB to 300mm NB

StandardANSI B16.9

Equal TeeReducing TeeANSI B16.9

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Fittings

M.S. Pipe End Caps Manufacturer Mumbai – MS End Caps Butt Weld ANSI B16.9 All Sizes

End Caps (Pipe Caps)

M.S. Pipe End Caps are used to permanently or temporarily seal the end of a pipe. Manufactured with a dished or flat end in butt weld configuration. Used for pipe system pressure testing, isolating pipe sections, permanent closure of dead-end lines and future pipeline extension points. Available in all standard sizes to ANSI B16.9.

Size Range15mm NB to 300mm NB

End TypeButt Weld (BW)

MaterialMild Steel (IS:2062)

StandardANSI B16.9

Pipe End SealButt WeldAll Sizes

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Product FAQ

What is the difference between E Table Flanges and standard M.S. Flanges?

Standard M.S. Flanges can be made to various international standards (ANSI B16.5, BS 4504, DIN). E Table Flanges (IS:1538 Table E) follow the Indian Standard IS:1538 dimension series specifically — with Indian-specified OD, bolt circle, bolt count and flange thickness for each NB size. E Table Flanges are mandated for Indian municipal water supply, sewage, fire-fighting and public sector piping projects. For projects specifying IS standard flanges, E Table Flanges are the correct choice.

What is the difference between Concentric and Eccentric Reducer Fittings?

Concentric Reducers: Both inlet and outlet pipe centrelines are on the same axis. Used in vertical piping or horizontal piping where centreline alignment is required. Eccentric Reducers: One side (flat side) is straight while the other is tapered. At centrifugal pump suctions, installed flat-side-up to prevent air pocket formation. At pump discharges, installed flat-side-down for proper drainage. Always specify concentric or eccentric when ordering reducer fittings.

What is the difference between Short Radius and Long Radius Elbow Fittings?

Short Radius (SR) Elbow: Centreline radius = 1× the nominal pipe size (1D). More compact, used in tight spaces but causes higher pressure drop. Long Radius (LR) Elbow: Centreline radius = 1.5× the nominal pipe size (1.5D). Provides a smoother, gradual change of direction with lower pressure drop and flow turbulence. Long radius elbows are preferred in most process piping systems. Short radius elbows are used where space is the primary constraint.

Do you manufacture M.S. Flanges in custom or non-standard sizes?

Yes. I.S. Engineering Co. accepts custom manufacturing orders for M.S. Flanges, E Table Flanges, Pipes and Pipe Fittings in non-standard sizes, custom OD, PCD, bore, thickness or bolt hole patterns. Share your technical drawing, specification sheet or dimensional requirements by WhatsApp, email or phone. Our team will provide manufacturing feasibility and a quotation within 24 hours. Minimum order quantities apply for custom sizes — contact us for details.

Do you supply to all cities in India?

Yes. I.S. Engineering Co. supplies M.S. Flanges, E Table Flanges, M.S. Pipes and Industrial Pipe Fittings PAN India. We regularly supply to Mumbai, Pune, Navi Mumbai, Delhi NCR, Bangalore, Chennai, Hyderabad, Ahmedabad, Surat, Kolkata, Nagpur and all major industrial cities and project sites across India.

Are you a manufacturer or a trader?

I.S. Engineering Co. is a direct manufacturer — not a trader, stockist or distributor. All M.S. Flanges, Pipes and Fittings are manufactured at our own factory in Darukhana, Mumbai using our own equipment. Buying direct means factory-direct pricing with no middlemen markup.

Do you provide GST invoices?

Yes. I.S. Engineering Co. is fully GST-registered (GSTIN: 27AMZPK5174G1ZE) and provides proper GST tax invoices on all supplies of M.S. Flanges, Pipes and Pipe Fittings. We are a compliant vendor for all procurement by businesses, government entities and PSUs.

M.S. Flanges, E Table Flanges,Pipes & Fittings – Complete Range

M.S. Flanges – Manufacturer Mumbai

M.S. Flanges

Blind Flanges

Welding Neck Flanges

Socket Weld Flanges

Flat / Slip-On Flanges

Male Female (M&F) Flanges

Forged Flanges

E Table Flanges (IS:1538) – Specialist Manufacturer

E Table Flanges (IS:1538 Table E)

M.S. Pipes – Square, Round & Rectangular

M.S. Square Pipes (IS:4923 SHS)

M.S. ERW Round Pipes (IS:1239 / IS:3589)

M.S. Rectangular Pipes (IS:4923 RHS)

Industrial M.S. Pipe Fittings

Elbow Fittings (45° & 90°)

Reducer Fittings (Concentric & Eccentric)

Tee Fittings (Equal & Reducing)

End Caps (Pipe Caps)

Product FAQ

What is the difference between E Table Flanges and standard M.S. Flanges?

What is the difference between Concentric and Eccentric Reducer Fittings?

What is the difference between Short Radius and Long Radius Elbow Fittings?

Do you manufacture M.S. Flanges in custom or non-standard sizes?

Do you supply to all cities in India?

Are you a manufacturer or a trader?

Do you provide GST invoices?

Need a Competitive Quote for M.S. Flanges, E Table Flanges or Pipe Fittings?

M.S. Flanges, E Table Flanges,
Pipes & Fittings – Complete Range