Pressure Vessel Precision Forgings — ASME VIII, EN 13445, PED 2014/68/EU, API 660
Shivam Forge manufactures ASME Section VIII Division 1 & 2 and EN 13445-certified precision hot forgings for pressure vessel construction — nozzle neck forgings, manway flanges, hemispherical head forgings, heat exchanger channel head forgings, and shell course nozzle forgings — in ASTM A182 F11/F22/F91/F304/F316L, SA336 F1/F22, and ASTM A350 LF2/LF3 low-temperature grades. Serving Doosan Enerbility (world's #1 power plant pressure vessel OEM), Chart Industries (world's #1 cryogenic pressure vessel manufacturer), Linde Engineering, BHEL Trichy, L&T HED (Heavy Engineering Division), and API Fabricators worldwide. ASME U-stamp, PED 2014/68/EU Category IV, ISO 9001:2015, EN 10204 3.1/3.2 certified. Rajkot, Gujarat, India. Call +91-9265772827.
Pressure vessels — from oil refinery reactors operating at 200 bar and 450°C to LNG storage tanks at −196°C and cryogenic air separation columns at −180°C — are among the most safety-critical equipment in industrial plant. Every pressure vessel contains multiple forged components: nozzle necks (the cylindrical inlet/outlet connections welded to the shell), manway (man-access opening) flanges, heat exchanger channel heads (thick-walled hemispheres), shell course nozzle forgings (branch connections on the shell), and hemispherical head forgings. These forgings, unlike the rolled shell plate, cannot contain laminations, hydrogen flakes, or internal defects that would compromise the vessel's ability to contain pressure — because any forging failure in a pressurized vessel is catastrophic and potentially lethal. International standards for pressure vessel forging qualify this criticality with rigorous requirements: ASME Section VIII Division 1 (the world's most widely used pressure vessel code, mandated in 140+ countries) requires ASTM or SA-designated forging materials with full chemical, tensile, hardness, and Charpy impact (for low-temperature service) qualification; EN 13445 (European standard, mandatory in EU under PED 2014/68/EU) requires EN material grades and EN 10228-3/4 NDE; and API 660 (for shell-and-tube heat exchangers) requires material traceability per ASME Section VIII. Shivam Forge manufactures the complete range of pressure vessel forgings — from 50 kg nozzle necks to 10 tonne heat exchanger channel heads — in all ASME/EN pressure grades, with full ASME U-stamp material certification, PED 2014/68/EU CE marking, and EN 10204 3.1/3.2 documentation.
Nozzle neck forgings (NPS 2" to 48", Wall Schedule 40 to XXS, 150# to 2500# classes) in ASTM A182 F1 (carbon steel), F11/F22 (chrome-moly for high-temperature 350–565°C), F91 (9Cr-1Mo-V for 565°C steam service), F304/F316L (stainless — for corrosive and cryogenic service), A350 LF2/LF3 (−46°C and −73°C low-temperature). Full ASME B16.11 dimensional compliance and EN 10204 3.1 material certificates.
Heat exchanger channel head forgings (hemispherical and ellipsoidal heads, OD 200mm to 3,000mm, wall thickness 30–300mm) in SA336 F1 (C-steel for CW/process service ≤370°C), F22 (chrome-moly for HT service), F304/F316L (stainless for corrosive/cryogenic). API 660 shell-and-tube heat exchanger material traceability. Weight range 50 kg to 10 tonnes. UT per ASME Section V Article 4, MT per ASME Section V Article 7.
Manway flange forgings (DN 500–1500mm, ASME B16.47 Series A/B, Class 150–900) in SA105N (carbon steel for ambient-temperature vessels), SA182 F304/F316L (stainless cryogenic vessels), SA182 F11/F22 (high-temperature chrome-moly vessels). Blind flange manway covers with handling lugs. Pressure vessel drum head nozzle forgings in SA336 F1/F22. EN 10204 3.1 material certificate with hardness survey.
Shell course branch connection forgings (sockolet, weldolet, nipolet — MSS SP-97 standard, NPS 1" to 8") and set-on nozzle forgings (NPS 4" to 24") in A182 F304/F316, F11/F22, A105N. Reinforcing pad forgings in matching base material (to ASME Section VIII UW-15 and UG-45 nozzle design). Complete ASME Section VIII Div.1 documentation: forging material, WPS/PQR welding documents, NDE reports.
LNG tank nozzle forgings (−196°C service) in ASTM A182 F304L/F316L with Charpy impact tested at −196°C (minimum 27 J average, 20 J individual — per ASME Section VIII Div.1 UCS-66 and EN 13445-2). Air separation unit (ASU) cold box nozzle forgings in A182 F304 for cryogenic O2, N2, and Ar service. Chart Industries and Linde Engineering cryogenic pressure vessel documentation requirements supported.
Hydroprocessing reactor nozzle forgings (ASME Section VIII Div.2 for H2 high-pressure service — design pressure 200–250 bar, H2 service T 400–450°C): SA336 F22 chrome-moly (2.25Cr-1Mo — Nelson Curve compliance for hydrogen attack resistance), SA336 F3V or F91 for ultra-high-pressure service. Full ASME Section VIII Div.2 weld qualification, PWHT requirements, and hydrogen embrittlement testing documentation.
Doosan Enerbility (formerly Doosan Heavy Industries & Construction, Changwon, South Korea — world's #1 manufacturer of heat recovery steam generators, nuclear steam generators, and gas turbine casings): SA336 F22 HRSG drum nozzle forgings (170 bar, 565°C), SA182 F91 main steam nozzle forgings (250 bar, 600°C for A-USC advanced ultra-supercritical plants), and SA508 Grade 3 nuclear steam generator nozzle forgings (ASME Section III Class 1). Doosan QA specification compliance.
Chart Industries (Ball Ground, Georgia, USA — $4.5B revenue, world's #1 cryogenic equipment manufacturer: HLNG, FLNG, LNG storage/regasification, air separation): A182 F304L/F316L cryogenic nozzle forgings (−196°C Charpy tested), A350 LF3 (−100°C) carbon steel nozzle forgings for subcooled propane/ethylene service, and MCHE end manifold nozzle forgings in A182 F304 for C3MR LNG liquefaction. Chart Industries vendor qualification documentation support.
Linde Engineering (Munich — Linde plc subsidiary, world's #1 industrial gas company): ASU (air separation unit) cold box nozzle forgings in A182 F304/F304L for cryogenic N2/O2/Ar service (−183°C to −196°C), reformer tube manifold forgings in HP-Modified (25Cr-35Ni centrifuge cast) equivalent wrought alloy for H2 generation plants. Linde Engineering's PMP (Process Module Package) procurement documentation compliance.
BHEL Trichy (Boiler Auxiliaries Plant — supercritical boiler drums, HRSG, pressure vessels) and L&T Heavy Engineering Division (Hazira, Surat — process plant pressure vessels, reactors, heat exchangers): SA336 F22 boiler drum nozzle forgings (BHEL's IS 7553 equivalent specification), SA182 F304/F316L shell nozzle forgings, and A350 LF2 low-temperature nozzle forgings for L&T's cryogenic vessel projects. Delivery ex-Rajkot within 5 days to BHEL Trichy or L&T Hazira.
ASME Section VIII Div.1 (most widely used pressure vessel code — 140+ countries) mandates ASME Section II Part A (SA-prefix) forging materials with heat analysis, product analysis, tensile, hardness, and Charpy impact. Div.2 (higher design stress, more rigorous NDE) requires additionally 100% UT per ASME Section V Article 4. Our ASME U-stamp material certification package: MTR, tensile + Charpy test results, UT/MT reports.
EN 13445 (European harmonized standard for unfired pressure vessels — mandatory under PED 2014/68/EU Annex I, replacing national standards from France, Germany, UK). EN 13445-2 specifies EN material grades: P280GH (C-steel), 13CrMo4-5 (Cr-Mo), X6CrNiTi18-10 (304L stainless). EN 10228-3 UT Class 3 and EN 10228-4 MT required for Category III/IV forgings. CE marking Module G (individual examination) or Module H (full quality assurance).
PED 2014/68/EU classifies pressure equipment into Categories I–IV based on pressure × volume × fluid hazard group. Category IV (most hazardous — Group 1 fluids, pressure > 200 bar): requires Notified Body (NB) involvement, Module G or H conformity assessment, and CE marking on Declaration of Conformity. Our PED Module D certification (TÜV Rheinland NB 0035) covers Category I–IV pressure-containing forgings.
API 660 (Shell-and-Tube Heat Exchangers for Petroleum and Natural Gas Industries) Section 7 requires full material traceability: ASME Section VIII materials with EN 10204 3.1 or 3.2 mill test reports, 100% NDE (UT + MT) for tube-to-tubesheet joints and channel head forgings, and PMI (Positive Material Identification) verification of alloy components. We provide complete API 660 documentation packages.
Pressure vessels — closed containers designed to hold gases or liquids at substantially different pressures from the ambient environment — are the single most safety-critical class of process equipment, precisely because their failure (burst, fatigue crack, or stress corrosion crack propagation) is invariably catastrophic. The ASME Boiler and Pressure Vessel Code Section VIII (Division 1 and 2) is the most widely adopted pressure vessel design and fabrication standard globally, mandated by law in the US (all 50 states), Canada, Australia, Japan, Korea, most of South America, the Middle East, and many Asian nations. The European equivalent — EN 13445 under the PED 2014/68/EU directive — applies throughout the EU's 27 member states and the UK (through retained legislation). Both codes share a common foundational requirement: all pressure-containing components — shells, heads, nozzle necks, and manway flanges — must be manufactured from certified materials with full traceability (heat number, chemical analysis, mechanical test results) and inspected by NDE (UT for volumetric defects, MT for surface cracks). Forgings are preferred over castings for pressure vessel nozzles and channel heads because they are: (1) stronger — forgings have 20–30% higher yield strength than equivalent castings of the same alloy due to grain refinement; (2) tougher — no porosity or shrinkage cavities that weaken castings under impact or cyclic loading; (3) traceable — each forging is individual-heat-number-traceable, unlike castings which can pool multiple heats. Shivam Forge manufactures the full range of pressure vessel forgings from ASME-certified materials, with complete U-stamp MTR packages for ASME vessels and PED 2014/68/EU CE marking for European vessels.
The heat exchanger channel head — the thick-walled hemispherical or ellipsoidal head at each end of a shell-and-tube heat exchanger (API 660) through which the tube-side fluid enters and exits — is one of the most demanding forgings in process plant. A typical process plant heat exchanger channel head (NPS 24", Class 300, SA336 F22 chrome-moly for 350°C hydrocracker service) weighs 800–1,500 kg, has wall thickness 80–150 mm (determined by ASME Section VIII Div.1 shell thickness calculation with corrosion allowance), and must withstand combined pressure (up to 80 bar), thermal cycling (ambient to 350°C), and hydrogen partial pressure (in hydroprocessing service — requiring 2.25Cr-1Mo F22 alloy that lies below the Nelson Curve for hydrogen attack per API 941). SA336 F22 forgings for hydroprocessing service require additional heat treatment: step-cooling thermal treatment to minimize temper embrittlement susceptibility (per API 934-A, Appendix A — Step-Cooling procedure, measuring ΔJ (VTT shift) ≤15°C and vTrs shift ≤10°C after step-cooling vs as-tempered). Chart Industries (world's #1 cryogenic equipment manufacturer, $4.5B revenue, acquired Howden and Howden Roots to add compressor capability) uses A182 F304L nozzle forgings for LNG storage vessels and A350 LF3 nozzle forgings for cryogenic propylene service. Linde Engineering's air separation units use A182 F304 forgings for the cold box nozzle connections at −183°C (liquid oxygen boiling point) to −196°C (liquid nitrogen boiling point), with all forgings Charpy-tested at service temperature to ensure no brittle fracture risk.
BHEL Trichy (Heavy Plates and Vessels Plant — HPVP) is India's premier pressure vessel fabricator, producing supercritical boiler drums (160 bar, 580°C), nuclear primary coolant pipes (ASME Section III), and process heat exchangers for ONGC, IOCL, HPCL, BPCL refineries. BHEL Trichy procures nozzle neck forgings in SA336 F22 (for chrome-moly pressure vessels), SA182 F304/F316L (for stainless vessels), and SA105N (for carbon steel vessels) — all manufactured at our Rajkot facility and delivered door-to-door to BHEL Trichy (Tamil Nadu) within 5 working days by road. L&T Heavy Engineering Division (Hazira, Surat) — L&T Group's pressure equipment arm — fabricates the world's largest pressure vessels (urea stripper for fertilizer plants: 13m diameter, 370 tonne), LNG heat exchangers (for Chart Industries OEM), and desalination pressure vessels (for ACWA Power, IDE Technologies). L&T HED procures A182 F304L/F316L cryogenic nozzle forgings with EN 10204 3.2 third-party certification for export destinations (Europe, Middle East). Doosan Enerbility (Changwon, South Korea — formerly Doosan Heavy Industries) is the world's leading manufacturer of nuclear steam generators (AP1000 unit, APR1400 design — 50+ sets supplied to US, UAE, Korea, and Europe) and fossil fuel boiler/HRSG units. Doosan's SA508 Grade 3 nuclear steam generator nozzle forgings — with ASME Section III Class 1 certification, full traceability to reactor-grade material specifications, and Authorized Nuclear Inspector (ANI) oversight — are among the most demanding forgings in the world. Shivam Forge provides SA508 Grade 3 nozzle blanks for Doosan Enerbility's final machining.
Shivam Forge's pressure vessel forging competitive position: (1) ASME U-stamp compliance — full SA-grade material certification with heat analysis, product analysis, tensile + Charpy (at specified temperature), and NDE documentation meeting ASME Section VIII requirements; (2) PED 2014/68/EU CE marking — Module D certification by TÜV Rheinland (NB 0035), covering Category I–IV for EU-destined pressure vessel forgings; (3) Full material grade coverage — carbon steel (SA105N, SA350 LF2/LF3), chrome-moly (SA182 F11/F22, SA336 F22/F3V, SA182 F91 for 565°C+ steam), stainless (SA182 F304/F304L/F316/F316L), and duplex (F51/F60 for aggressive chemical service); (4) NDE capability — 100% UT (ASME Section V Article 4) and MT (Article 7) with ASNT Level II certified inspectors; (5) Competitive pricing — 25–35% below equivalent US (Ellwood City Forge, All American Semiconductor forgings) or European (Forginox, Viraj Profiles export prices) sources on ASME-certified material. Maximum forging weight: 10 tonnes (channel heads, large shell nozzle blocks). Maximum nozzle neck: NPS 48". Lead time: 4–8 weeks for standard grades (SA105N, SA182 F304/F316L); 8–14 weeks for chrome-moly (SA182 F11/F22/F91) requiring extended Q+T cycles. Contact our pressure vessel team at +91-9265772827 for ASME U-stamp material certification and CIF global port quotations.
We supply: SA105N (C-steel, ambient temperature service), SA182 F1/F11/F22/F91 (chrome-moly for high-temperature 350–565°C), SA182 F304/F316L (stainless for corrosive and cryogenic −196°C service), SA350 LF2 (−46°C low-temperature) and LF3 (−73°C). All with ASME Section VIII U-stamp material certification: heat analysis, product analysis, tensile, Charpy impact, and hardness.
Yes. Our forging manufacture is qualified under ASME U-stamp material certification requirements — ASME Section II Part A SA-designated grades with full material traceability (heat number, heat analysis, product analysis, tensile, Charpy impact, hardness, NDE). We do not fabricate (weld) pressure vessels; we supply forgings to ASME U-stamp vessel fabricators for incorporation into their ASME Section VIII pressure vessels.
Yes. For LNG cryogenic pressure vessels (−196°C service), we supply A182 F304L and F316L nozzle forgings with Charpy impact tests at −196°C (minimum 27 J average, 20 J individual per ASME Section VIII UCS-66 and EN 13445-2). Full material certification with cryogenic test results for Chart Industries, Linde Engineering, and BHEL cryogenic vessel fabrication.
Yes. For hydroprocessing reactors (200–250 bar H2 service, 400–450°C), we supply SA336 F22 nozzle forgings (2.25Cr-1Mo — per API 941 Nelson Curve for hydrogen attack resistance), with full ASME Section VIII Div.2 weld qualification, PWHT requirement documentation, and Step-Cooling heat treatment for temper embrittlement resistance per ASME FFS-1/API 579.
Our maximum heat exchanger channel head forging is 3,000 mm OD (3 metres outer diameter), 300 mm wall thickness, approximately 10 tonnes. Material grades: SA336 F1 (carbon steel), F22 (chrome-moly), F304/F316L (stainless). Hemispherical and ellipsoidal heads available. Full API 660 documentation, 100% UT (ASME Section V Article 4) and MT (Article 7) inspection.
Yes. For Doosan Enerbility's nuclear applications, we supply SA508 Grade 3 Class 1 nozzle forgings (nuclear pressure vessel steel — Charpy at −12°C ≥102 J, nil-ductility transition temperature ≤−12°C) with ASME Section III Class 1 documentation. N-stamp material certificate documentation provided. Doosan Enerbility QCOS (Quality Control and Operating Specification) compliance documentation supported.
Yes. Our PED 2014/68/EU Module D certification (TÜV Rheinland NB 0035) covers Category I–IV pressure-containing forgings for supply to EU member states (Germany, France, Italy, Netherlands, Belgium, Greece, Poland, etc.). CE marking with Declaration of Conformity (DoC) and Technical Documentation File issued for all pressure-critical forging lots. EN 13445 material grades and EN 10228-3/4 NDE documentation available.
For pressure vessel forgings: (1) 100% volumetric UT per ASME Section V Article 4 or EN 10228-3 Class 3 (full coverage, automated or manual scanning, acceptance criteria per ASME or EN); (2) 100% surface MT per ASME Section V Article 7 or EN 10228-4 (fluorescent wet, DC yoke); (3) visual and dimensional inspection; (4) PMI (Positive Material Identification) by XRF or OES for alloy forgings. Full NDE reports and certified NDE operator qualifications (ASNT Level II or EN ISO 9712 Level 2).
Why Choose Shivam Forge
Shivam Forge delivers precision hot-forged components from our integrated Shapar, Rajkot facility — covering forging, CNC machining, heat treatment, and quality inspection under one roof.
