Sigma Polymer Company

About Us

Sigma Polymers Engineering co. is an ISO 9001:2008 approved company established in the year 2008 with factory equipped with well designed amenities to manufacture plastic lined systems. Since beginning, we use “Dupont” make raw material for processing of fluoropolymer lined pipes, fittings, valves and other accessories integral to chemical process industry.

All Sigma manufactured Lined Pipes, Fittings and Valves are backwards traceable from the finished component to the manufacturing tests, processes and lining materials. Each spool has one flange stamped with the reference of the liner batch used in its construction. This provides traceability back to the liner manufactured, the tests undertaken and the materials certification of the polymer. FEP / PFA moulded items likewise are stamped with a mould reference which again provide traceability back to the manufacturing and test activities and the material certification of the polymers used.

All sigma marked products are traceable in its cross reference to project activity, color coding is used for identifying specific isometric drawing content. Pipes are packed well with the protective wooden waterproof end board with nuts and bolts to the flange ends. For valves and fittings plastic moulded caps are fitted at the end.

Our Products

Pfa, Fep Lined Ball Valve

Ductile Iron ASTM A395., Cast Steel ASTM A216 Gr.WCB.

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Pfa/fep Lined Flush Bottom Valve

Lining Material : PFA / FEP, Lining Thickness : 3 mm all wetted parts.

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Non Return Valve

Ductile Iron ASTM A395, Cast Steel ASTM A216 Gr.WCB.

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Pfa/fep Lined Diaphragm Valve

PFA / FEP LINED DIAPHRAGM VALVE AS PER ANSI 150#.

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Pfa/fep Lined Butterfly Valve

Ductile Iron ASTM A395, Cast Steel ASTM A216 Gr.WCB.

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Pfa/fep Lined Plug Valve

Ductile Iron ASTM A395, Cast Steel ASTM A216 Gr.WCB

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Lined Spool Pipe

HOUSING MATERIAL Pipe : 1. Seamless Carbon Steel ASTM A 106 Gr.B.Sch-40 2. ASTM A 312 TP 304,Sch-40 Flanges : 1. Made from IS 2062 Plates/ASTM A 105 2. ASTM A 351 Gr.CF 8

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Lined Jacketed Spool Pipe

MATERIAL SPECIFICATIONS : Pipe : Seamless Carbon Steel ASTM A 106 Gr.b, Sch.40 / ASTM A 312 TP 304, Sch.40. Flange : IS 2062 / ASTM A 105 / ASTM A 351 Gr. CF8.

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Lined Spacer

HOUSING MATERIAL Body : Made from IS 2062 Plates, Liner : PTFE in accordance with ASTM D 1457

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Ptfe Solid Type Spacer

HOUSING MATERIAL: PTFE : ASTM D 1457

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90° Lined Elbows

HOUSING MATERIAL : Bend : Formed from ASTM A 106 Gr.B Pipes, Flanges : Made from IS 2062 Plates

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45° Lined Elbows

HOUSING MATERIAL: Bend : Formed from ASTM A 106 Gr.B Pipes, Flanges : Made from IS 2062 Plates

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Lined Equal Tees

HOUSING MATERIAL : Fabricated : Flanges made from IS 2062 Plates, Tee : Pipe as per ASTM A 106 Gr.B

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Lined Unequal Tees

HOUSING MATERIAL : Fabricated : Flanges made from IS 2062 Plates, Tee : Pipe as per ASTM A 106 Gr. B, Cast Tee : SG Iron as per IS 1865-1991

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Lined Instrument Tee

Fabricated Tee : Body : MS Round bar, Pipe : ASTM A 106 Grade B, Flanges : Made from IS 2062 Plates

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Lined Equal Cross

HOUSING MATERIAL: Casting : SG Iron IS 1865 : 1991 Gr.400/15, Lining : FEP

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Lined Unequal Cross

HOUSING MATERIAL : Casting : SG Iron IS 1865 : 1991 Gr.400/15, Lining : FEP. Material for Fabricated Fitting

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Lined Sight Flow Indicator

Body : SG Iron as per IS 1865 : 1991 Gr. 400 / 15, Lining : FEP

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‘Y’ Type Strainer

BODY MATERIAL OPTIONS : Ductile Iron ASTM A 395. Cast Steel ASTM A216 Gr.WCB. ASTM A351 Gr. CF8/AISI S.S. 304.

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Lined Header

Flange : Plate Flange From Carbon Steel Plates As Per ASTM A 105 / IS 2062, Pipe : Simless Carbon Steel Pipes As Per ASTM A - 106, Sch. 40.

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Lined Eccentric Reducers

Lined Eccentric Reducers

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Lined Concentric Reducers

Fabricated Flanges: Made from IS 2062 Plates, Eccentric Reducer : ASTM A 234 Gr.WPB

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Lined Reducing Flanges

Flanges : IS 1865 : 1991 Grade 400/15, Lining : FEP

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Lined Blind Flanges

Flanges : Made from IS 2062 plates, Liner : PTFE in accordance with ASTM D 1457

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Ptfe High Pressure Bellows

Flanges : C.S Galv., Bellows (Moulded) : 100 % PTFE - ASTM D 4895

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Hose Nipple

Flange : IS 2062 ASA 150#., Nozzle : MS.

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Lined Hose Pipe

S.S 304 / S.S 316 Braided Hose, Flange : ASTM A 351 Gr. CF8 / CF8M ANSI 150# Rating.

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Lined Dip Pipe

All wetted parts PTFE Lined, giving optimum, corrosion resistance ...

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Closed End Dip Pipe

Unique joint less construction for prolonged service, Perfectly suited for vessels with agitator...

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Dip Tube

Dip Tube

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Reinforced Dip Tube

Full Length Sparging, Anti Siphoning safeguard

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Ptfe Envelope Gasket

PTFE lined piping technology was developed to meet serve operating conditions in the chemical handling industry to solve the problems of Corrosion, Erosion & maintenance free

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Ptfe ‘t’ Bush Nozzles Of Glass Lined Reactor (Glr)

PTFE lined piping technology was developed to meet serve operating conditions in the chemical handling industry to solve the problems of Corrosion

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Ptfe Structure Packing

PTFE Structured Packing refers to a range of specially designed materials for use in absorption and distillation columns and chemical reactions. PTFE Structured Packing typically consist

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Stainless Steel Lined Pipes And Fittings

Sigma can supply with complete range in SS 304 and SS 316 Lined Pipes & Fittings.

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Ptfe Moulded / Machined Parts

PTFE combats with chemicals attack and is suitable for gaskets, bushes, line bellows, valve bellows, vaccum bellows,

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