P.K. Group – P.K. Tubes and Fittings Pvt. Ltd.P.K. Tubes & FittingsPVT. LTD.

Materials

Material capability across demanding service conditions

Material selection is confirmed against project specification, service conditions and applicable standards. Grades are supplied with material identification and traceability.

Material groups

Grades we manufacture in

Ferrous and non-ferrous materials supplied with material identification and full traceability. Specifications shown are the primary ASTM / ASME designations for fittings.

Stainless Steel

ASTM A403 WP

Corrosion-resistant austenitic grades for process and hygienic service.

304304L304H309310316316L316Ti317L321347347H904L

Carbon Steel

ASTM A234

Standard workhorse material for general process, utility and pipeline piping.

WPBWPBWWPHY 42WPHY 46WPHY 52WPHY 60WPHY 65WPHY 70

Low Temperature Carbon Steel

ASTM A420

Impact-tested grades for cryogenic and low-temperature service.

WPL3WPL6

Alloy Steel

ASTM / ASME A/SA 234

Chrome-moly grades for elevated temperature and pressure service.

WP1WP5WP9WP11WP12WP22WP91

Duplex & Super Duplex

ASTM A815 / ASME SA 815

High strength and chloride stress-corrosion resistance; dual certified.

UNS S31803S32205S32750S32760

Nickel Alloys

ASTM / ASME SB 336, SB 363, SB 366

Specialised alloys for highly corrosive and high-temperature duty.

Nickel 200 (N02200)Nickel 201 (N02201)Monel 400 (N04400)Alloy 20 (N08020)Incoloy 825 (N08825)Inconel 600 (N06600)Inconel 601 (N06601)Inconel 625 (N06625)Hastelloy C-276 (N10276)

Titanium

ASTM B363

Light, exceptionally corrosion-resistant material for demanding media.

Titanium

Production range

Standard size butt weld fittings

Size and construction envelope for seamless and welded butt weld fittings. Larger or non-standard sizes are reviewed on request.

ConstructionType of steelElbow LR/SRTeesReducersCaps
SeamlessCarbon Steel; Alloy Steel including P91; Stainless Steel; Super Duplex (UNS S32750/S32760); ASTM B366 WP20CB-S (N08020 / Alloy 20); ASTM B366 WPNCMC Gr. 1 (N06625 / Inconel 625)1/2"–30" Max. schedule1/2"–24" Max. schedule1/2"–30" Max. schedule1/2"–90" Max. schedule
Welded with 100% radiography (per relevant codes and standards)Carbon Steel; Alloy Steel including P91; Stainless Steel; Super Duplex (S32750/S32760); Nickel Alloy; Alloy 20; ASTM B366 WPHB2WX (N10665 / Hastelloy B2)10"–72" Max. schedule10"–86" Max. thickness8" NB–86" Max. thickness

Production range

Spectacle blinds & socket weld / threaded fittings

ProductType of steelConstructionSize / rating
Spacer, Spade & Spectacle BlindsCarbon Steel; Alloy Steel; Stainless Steel; Super Duplex (UNS S32760)Plate type1/2"–102" Maximum rating
Spacer, Spade & Spectacle BlindsCarbon Steel; Alloy Steel; Stainless Steel; Super Duplex (UNS S32760)Forged1/2"–48" Maximum rating
TeesCarbon Steel; Alloy Steel; Stainless Steel; Super Duplex (UNS S32760)Welded & Threaded1/4"–4" 3000#, 6000#, 9000#
ElbowsCarbon Steel; Alloy Steel; Stainless Steel; Super Duplex (UNS S32760)Socket Weld & Threaded90°/45°; 1/2"–4" 3000#, 6000#, 9000#

Need a specific material grade?

Send us your technical requirements, drawings or bill of quantities and our team can review your enquiry.