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Seamless Heat Exchanger U Tubes

Heat-exchanger U tubes are used in the following types of equipment: shell & tube heat exchangers, plate & frame heat exchangers, cooling towers, air coolers and others. The main industries of heat-exchanger tube application are chemical & petrochemical, Power Generation (including nuclear), Oil & Gas, Food and Beverage, Pulp and Parer, Transportation, and others.

We at Krystal Global Engineering Limited, provide a variety of Stainless Steel Seamless Heat Exchanger Tubes, Including Austenitic, Ferritic, Martensitic, Duplex, Super Duplex & Nickel Alloys.

manufacturer and supplier of Stainless Steel Duplex,Duplex, tube fittings, Seamless Stainless Steel,Super Duplex,Nickel Alloy Tubes, Pipes and U Tubes.

Krystal India supplies heat exchanger tubes and u tubes for several critical applications which require high corrosion resistance materials and highest quality standards to be maintained. Some of these applications include condensers, Coolers, Evaporators, and Heaters in Refineries, Petrochemicals, Chemicals,  Oil and Gas, Organic and Inorganic acids, Hydrometallurgy, Power generation and Desalination.

Krystal has approvals from several national and international clients. References include supplies made to customers/end customers in the Middle East,  Europe and North America.

Grade Size & Standards

Austenitic Stainless Steel: TP 304/304L, EN 1.4031/1.4307, EN 1.4306, TP 304H, TP 310S, EN 1.4845, TP 316/316L, EN 1.4401/1,4404, TP 316Ti, EN 1.4571, TP 317/L, EN 1.4438, TP 321/321H, EN 1.4541, TP 347/H, EN 1.4550/1.4551, TP 904L, EN 1.4539, UNS 31254, TP 405, TP 409, TP 410.

Ferritic Steel Duplex Stainless Steel: UNS 31803/32205 (EN 1.4462), UNS 32750 ( EN 1.4410), UNS 32760 (EN 1.4501), UNS 31500

Nickel Alloys: UNS N08020, UNS N08028, UNS N04400, UNS N06600, UNS N06625, UNS N08800, UNS N08825

Special Grade: EN 1.4835, 1.4435, EN 1.4335, UNS No. S31050, 316L UG

Outside Diameter: 9.53 mm to 50.80 mm

Wall Thickness: 0.89 mm to 5.00 mm

Length: As per Customer’s Drawing, Developed length up to 14 Meter.

Specification: ASTM A213, A269,  A-789, A 790

ASME SA213, SA269, SA-789, SA 790, SB 163 / SB 165 / SB 423/ SB 444 / SB 729 / SB 829

EN 10216-5 (TC1 / TC2) / EN 1127 / EN 10297-2 / DIN 2391

TЕМА RCB 2.31 / DIN 28179

Standards: ASTM/ASME/EN/ DIN also available

Supply Condition: Solution-annealed, pickled and passivated (CFD), Bright Annealed (CFA)

Production process: Cold Pilgering / Cold Drawing

Production facilities: Pilger Mills, Draw benches, Straightening machine, Degreasing facility,  Solution & Bright annealing furnace and U bending

Quality Testing: In house: NDT (Eddy current testing, Hydro testing), UT can be offered if required, Mechanical (Tensile/Hardness/Flattening /Flaring/bend), Chemical analysis, Corrosion –Inter granular corrosion, PMI (Positive Material Identification)

Quality Standards / Shop approvals: ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ENGINEERS INDIA LIMITED  (EIL), IBR, PED 2014/68/EU, AD 2000 – Merkblatt W0 & NORSOK.

Krystal Value Proposition

IN-SITU Metallography


Main Industry Applications

  • Heat Exchangers
    • Airfin Cooler
    • LP / HP Heaters
  • Pressure Vessels
  • Oil & Gas
  • Power Generation
  • Chemical and Fertilizer
  • Marine Equipments
  • Refinery and Petrochemical
  • Process Industry
    • Food Processing
    • Fertilizer
  • Dairy / Pharmaceutical Industry
  • Nuclear Power Generation
  • Aerospace

For more information on grades & product sizes kindly email [email protected]