Seamless tubes and pipes
Seamless Tubes and pipes
Krystal Steel is a leading manufacturer and supplier of seamless tubes and pipes, along with sheets, plates, and coils, based in Ahmedabad, India. We are driven by quality, precision manufacturing, and adherence to international standards. Our products are widely used across industries such as oil & gas, engineering, construction, power, and infrastructure. With advanced production facilities and a skilled workforce, Krystal Steel delivers reliable, durable, and high-performance steel solutions to meet diverse industrial requirements.
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International Brands :
- Nippon Steel
- Sandvik Coromant
- Sumitomo Heavy Industries, Ltd.
- Plymouth Tube
Indian Brands :
- Krystal Steel
- Jindal Steel
- Ratnamani Metals & Tubes Ltd.
- Divine Tubes Pvt. Ltd.
- Suraj Limited
- Maxim
- Chandan Steel Limited
- Vinus Engineering Co
- Swastico
- APT
- Ratnadeep Metal & Tubes Ltd.
Seamless Heat Exchanger Tubes
Krystal Steel manufactures high-quality seamless heat exchanger tubes and pipes used in shell & tube heat exchangers, cooling towers, air coolers, and other heat transfer equipment. These products are widely used in industries such as oil & gas, power generation, chemical and petrochemical, food processing, and pulp and paper, offering reliable performance, durability, and efficient heat transfer.
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. |
| Production process | Cold Pilgering / Cold Drawing |
| Production facilities: | Pilger Mills, Draw benches, Straightening machine, Degreasing facility, Solution & Bright annealing furnace. |
| 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) |
| Outside Diameter: | 6 mm to 101.6 mm |
| Wall Thickness | 0.6 mm to 8.00 mm |
| Length | As per Customer’s Drawing, Developed length up to 18 Meter Long. |
| 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 | |
| Standards | ASTM/ASME/EN/ DIN also available |
| Supply Condition | Solution-annealed, pickled and passivated (CFD), Bright Annealed (CFA), Mirror OD Mechanical Polish |
| 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. |
Seamless Heat Exchanger U Tubes
Krystal Steel manufactures seamless heat exchanger U tubes for use in shell & tube heat exchangers, plate & frame heat exchangers, cooling towers, air coolers, and other thermal systems. These U tubes are widely used in industries such as chemical and petrochemical, power generation (including nuclear), oil & gas, food and beverage, pulp and paper, transportation, and other industrial applications, delivering reliable performance and efficient heat transfer.
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 |
| 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) |
| 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 |
| 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. |
Seamless Instrumentation Tubes, Hydraulic Tube and Mechanical Tube
Krystal Steel manufactures high-quality seamless instrumentation, hydraulic, and mechanical tubes designed for precision and reliability. These tubes are widely used in hydraulic and pneumatic control systems, fuel supply and pressure sensor lines in the automotive industry, oil & gas onshore and offshore facilities, subsea manifolds, semiconductor applications requiring high-purity tubing, advanced engineering systems, cooling circuits, and brake cylinders, ensuring safe and efficient performance in demanding applications.
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 |
| Production process | Cold Pilgering / Cold Drawing |
| Supply Condition | Solution-annealed, pickled and passivated (CFD), Bright Annealed (CFA) (Up to RA < 0.4 MICRON) , Mirror OD Mechanical Polish |
| Production facilities | Pilger Mills, Draw benches, Straightening machine, Degreasing facility, Solution & Bright annealing furnace. |
| Outside Diameter | 4 mm to 76 mm |
| Wall Thickness | 0.5 mm to 8.00 mm |
| Length | 6 mar Fixed Length or As per Customer’s Drawing |
| 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 | |
| Standards | ASTM/ASME/EN/ DIN also available |
| 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. |
seamless pipes
Krystal Steel manufactures and supplies a wide range of seamless pipes, including stainless steel austenitic, ferritic, martensitic, duplex, super duplex, and nickel alloy grades. These high-quality seamless pipes offer excellent corrosion resistance, high strength, and the ability to withstand high-pressure and high-temperature conditions. Widely used in industries such as petroleum, chemical, pharmaceutical, food processing, and pipeline transportation systems, Krystal Steel’s seamless pipes provide a reliable, efficient, and economical solution for fluid transmission and structural applications.
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 |
| End | Bevelled Ends/Plain Ends |
| Production facilities: | Pilger Mills, Draw benches, Straightening machine, Degreasing facility, Solution & Bright annealing furnace. |
| 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) |
| Outside Diameter | 1/8″ NB to 12″ NB (10.30 mm to 323.90mm) |
| Wall Thickness Range | SCH 5S to SCH XXS (1.24mm to 25.40mm ) |
| Length | Up to 12 Meter of Fixed/Random/Double Random Lengths. |
| Specification | ASTM A-312, A-790 |
| Standards | ASTM/ASME/EN/ DIN also available |
| Supply Condition | Solution-annealed, pickled and passivated (CFD), Mirror OD Mechanical Polish |
| Production process | Cold Pilgering / Cold Drawing |
| 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. |
Finned Tubes
Krystal Steel’s Finning Division specializes in providing a comprehensive range of finned tubes designed for high-efficiency heat transfer applications. The tubes are manufactured in two main types: applied finned tubes, where metal fins are helically wound onto a base tube or pipe, and extruded finned tubes, where fins are integrally formed from the base tube on the outside and/or inside diameter. Aluminium extruded fin tubes are among the most efficient heat exchanger tubes, as they significantly increase the heat transfer surface area, thereby enhancing overall heat transfer efficiency and performance in heat exchanger systems.
Grade Size & Standards
| Base Tube Material | Stainless Steel, Duplex & Nickel Alloys |
| Base Tube Diameter | 12.00 mm to 38.00 mm |
| Fin Type | Extruded, Embedded (G Type), wrap-on (L, LL, KL), Integral low finned tubes |
| Fin Material | Aluminium |
| Fin Thickness | 0.35 mm to 0.45 mm |
| Fin Height | 8 mm to 15.8 mm |
| Fin Pitch | 6 FPI to 12 FPI |
| Length | As per Customer Requirements, a Maximum of up to 14 Meters |
| Testing | Fin Tubes will be supplied duly Hydro Tested after finning and all the testing as per specifications |
| End Cut | Plain portion at both end |
Electropolished Tubes
Krystal Steel understands the importance of smooth and contamination-free material flow in critical applications. Electropolished tubes, along with inside and outside mechanically polished tubes, offer an exceptionally smooth surface that ensures efficient flow without stagnation. Krystal Steel’s Surface Bright Annealed (SBA) electropolished tubes are widely used as high-performance solutions in the pharmaceutical, dairy, brewery, biotechnology, and semiconductor industries, where hygiene, precision, and reliability are essential.
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Grade Size & Standards
| Metallurgy | Auestenitic, Duplex, Nickel Alloys, Super Austenitic, Super Duplex, Ferritic |
| Outside Diameter | 3.18 mm to 88.9 mm |
| Wall Thickness | 0.89 mm to 2.77 mm |
| Specification | ASTM A213 / ASTM A269 |
| Length | 6 Meter Fixed Length or as per customer requirements |
| Roughness | Ra <= 0.25 μm (Internal), Ra <= 0.50 μm (External) |
| Packing | Each tube purged with N2 gas, capped on both ends, packed in clean double layer of bags and final in to wooden case. |
| End Cut | Plan End |
Coil Formed Tubes
Krystal Steel manufactures high-quality coil formed tubes, commonly used as control line tubing for the transmission of hydraulic fluids and control signals in demanding applications. These precisely engineered tubes ensure reliable communication and control between system components, even in harsh or remote environments. Coil formed tubes from Krystal Steel are widely used in oil and gas wells for pressure control, temperature monitoring, and fluid injection, as well as in aerospace and automotive industries for hydraulic and pneumatic systems.
Specifications
| Specifications | ASME / ASTM A 213 / A 269 |
| OD | 3.175 mm to 19.05 mm |
| Thickness | 0.5 mm to 1.65 mm |
| Leg Length | Up to 300 Meters in Coil Form (Depending Upon Size) |
| Coil Dia | Up to 1 Meter |
| Process Features | Bright Annealed / Annealed Pickled Polished |
| Surface Finish | Bright Annealed (CFA), Solution Annealed (CFD), Polished (APP) |
Corrugated Tubes
Krystal Steel manufactures high-quality corrugated tubes in seamless construction, offering both single corrugation and cross corrugation designs. These tubes are produced by indenting plain tubes with smooth or spiral projections, creating turbulence on both the inside and outside surfaces to enhance heat transfer efficiency and extend tube life. Krystal Steel’s corrugated tubes are widely used in absorption and turbo refrigerators, screen refrigerators, distillation plants, and multi-effect systems for effluent water, dye-house waste, sludge digestion, and food processing applications, and are available in materials such as copper, cupro nickel, stainless steel, and carbon steel.
Grade Size & Standards
| Range | 6.35 mm to 50.8 mm |
| Thickness | 0.50 mm to 6.0 mm |
| Length | As per Customer requirements, Maximum up to 22 meters long. |
| Specifications | ASTM A213, ASTM A269 |
| Packing | Sleeved, Ends Capped, Wooden Boxed |
| End Cut | Plain Cut |
