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Valves for Oil & Gas Pipelines — Ulsan

Ulsan is South Korea's industrial powerhouse — home to SK Innovation's Ulsan refinery (840,000 bpd, South Korea's largest), S-OIL's Onsan refinery (669,000 bpd), and Hyundai Heavy Industries' shipyard (world's largest single shipbuilding complex); the city's LNG receiving terminals require cryogenic-rated ball valves and butterfly valves per KGS (Korean Gas Safety) and API 6D standards; Vajra Industrial Solutions supplies API 6D ball valves, ASME B16.34 gate and globe valves, and fire-tested butterfly valves to Ulsan refineries and shipbuilding contractors — Korean customs HS code declarations, EN 10204 3.1 MTCs, and Korean Industrial Standards (KS) compliant documentation provided.

API 6D trunnion ball valves, slab gate, and dual-plate check valves for crude oil, natural gas, and multiphase pipeline systems.

API 6DAPI 6FA (Fire Test)NACE MR0175 / ISO 15156ASME B16.34API 598 (Testing)
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API 6D Certified
ASME B16.34
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Oil & Gas Pipelines Valves — Available in Ulsan

Trunnion Ball Valve

Class 150 / 300 / 600 / 900 / 1500 / 2500

Full-bore isolation for large-diameter pipeline service; DBB for metering stations

Materials: A216 WCB, A351 CF8M, A890 Duplex, Inconel overlay for sour service  ·  Standards: API 6D, API 6FA, API 607, ISO 14313
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Slab Gate Valve

Class 150 / 300 / 600 / 900

Through-conduit, full-bore isolation for crude oil and gas trunk lines with pigging requirements

Materials: A216 WCB, A350 LF2 (low temp), A182 F51 Duplex  ·  Standards: API 6D, API 600, ASME B16.34
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Dual-Plate Check Valve

Class 150 / 300 / 600 / 900

Compact, low-pressure-drop non-return valve for pipeline compressor and pump stations

Materials: A216 WCB, A351 CF8M, A182 F51  ·  Standards: API 6D, API 594, ASME B16.34
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DBB Ball Valve

Class 300–2500

Double-block-and-bleed for metering skids, chemical injection, and instrument isolation

Materials: A216 WCB, SS 316, Duplex F51, Super Duplex F53  ·  Standards: API 6D, ISO 14313, API 607
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Oil & Gas Pipelines Industry in Ulsan

Ulsan is South Korea's industrial powerhouse — home to SK Innovation's Ulsan refinery (840,000 bpd, South Korea's largest), S-OIL's Onsan refinery (669,000 bpd), and Hyundai Heavy Industries' shipyard (world's largest single shipbuilding complex); the city's LNG receiving terminals require cryogenic-rated ball valves and butterfly valves per KGS (Korean Gas Safety) and API 6D standards; Vajra Industrial Solutions supplies API 6D ball valves, ASME B16.34 gate and globe valves, and fire-tested butterfly valves to Ulsan refineries and shipbuilding contractors — Korean customs HS code declarations, EN 10204 3.1 MTCs, and Korean Industrial Standards (KS) compliant documentation provided.

Oil Refining (SK Innovation, S-OIL)Petrochemical ManufacturingShipbuilding & Offshore (Hyundai Heavy Industries)LNG Receiving TerminalsAutomotive Manufacturing (Hyundai Motor)

Critical Valve Requirements

API 6D certification — mandatory for all pipeline isolation valves
Fire-safe design per API 607 / API 6FA for hydrocarbon service
Anti-static design — electrical continuity between ball/stem and body
NACE MR0175 / ISO 15156 compliance for H₂S / sour service
Full-bore (through-conduit) design for pigging compatibility
ESD (Emergency Shutdown) rated assemblies with SIL 2/3 compliance
Documentation: MTR (EN 10204 3.1/3.2), pressure test, dimensional, PMI

Why Ulsan's Oil Refining (SK Innovation, S-OIL) Sector Needs Oil & Gas Pipelines Valves

Ulsan is South Korea's industrial powerhouse — home to SK Innovation's Ulsan refinery (840,000 bpd, South Korea's largest), S-OIL's Onsan refinery (669,000 bpd), and Hyundai Heavy Industries' shipyard (world's largest single shipbuilding complex); the city's LNG receiving terminals require cryogenic-rated ball valves and butterfly valves per KGS (Korean Gas Safety) and API 6D standards; Vajra Industrial Solutions supplies API 6D ball valves, ASME B16.34 gate and globe valves, and fire-tested butterfly valves to Ulsan refineries and shipbuilding contractors — Korean customs HS code declarations, EN 10204 3.1 MTCs, and Korean Industrial Standards (KS) compliant documentation provided. Key facilities in the Ulsan area — including SK Innovation Ulsan Refinery (840,000 bpd — South Korea's largest), S-OIL Onsan Refinery (669,000 bpd), Hyundai Heavy Industries Ulsan Shipyard (world's largest) — rely on Trunnion Ball Valve for their oil refining (sk innovation, s-oil) operations. Vajra Industrial Solutions supplies Trunnion Ball Valve, Slab Gate Valve, Dual-Plate Check Valve, DBB Ball Valve for oil & gas pipelines projects across Ulsan, with full API 6D and API 6FA (Fire Test) compliance documentation — EN 10204 3.1 material test certificates, API 598 pressure test reports, and third-party inspection co-ordination available for every order.

Delivery to Ulsan

Vajra Industrial Solutions offers export documentation and delivery to Ulsan in 7–14 business days. Emergency dispatch available for plant shutdowns and critical site requirements.

Also serving: SK Innovation Ulsan Refinery (840,000 bpd — South Korea's largest), S-OIL Onsan Refinery (669,000 bpd), Hyundai Heavy Industries Ulsan Shipyard (world's largest), Korea Gas Corporation (KOGAS) Tongyeong LNG terminal, Hyundai Motor Ulsan plant (1.5M cars/yr)

FAQ — Oil & Gas Pipelines Valves in Ulsan

Do you supply oil & gas pipelines valves in Ulsan?
Yes. Vajra Industrial Solutions supplies Trunnion Ball Valve, Slab Gate Valve, Dual-Plate Check Valve, DBB Ball Valve for oil & gas pipelines applications in Ulsan, Ulsan. Ulsan is South Korea's industrial powerhouse — home to SK Innovation's Ulsan refinery (840,000 bpd, South Korea's largest), S-OIL's Onsan refinery (669,000 bpd), and Hyundai Heavy Industries' shipyard (world's largest single shipbuilding complex); the city's LNG receiving terminals require cryogenic-rated ball valves and butterfly valves per KGS (Korean Gas Safety) and API 6D standards; Vajra Industrial Solutions supplies API 6D ball valves, ASME B16.34 gate and globe valves, and fire-tested butterfly valves to Ulsan refineries and shipbuilding contractors — Korean customs HS code declarations, EN 10204 3.1 MTCs, and Korean Industrial Standards (KS) compliant documentation provided. We offer export documentation and delivery to Ulsan in 7–14 business days with full documentation and third-party inspection.
What certifications are required for oil & gas pipelines valves in Ulsan?
For oil & gas pipelines in Ulsan, the applicable standards are: API 6D, API 6FA (Fire Test), NACE MR0175 / ISO 15156, ASME B16.34, API 598 (Testing), ISO 14313, API 607. All valves are supplied with full documentation including material test reports (EN 10204 3.1/3.2), pressure test certificates, and dimensional inspection reports. Third-party inspection (TPI) by EIL, Bureau Veritas, Lloyd's Register, or the client's nominated inspector can be arranged.
What is the delivery time for oil & gas pipelines valves to Ulsan?
Standard stock sizes: export documentation and delivery to Ulsan in 7–14 business days. Custom sizes and special materials (Duplex, Hastelloy, P91): 4–8 weeks manufacturing lead time. Express dispatch available for urgent site requirements. Contact us at +91-9979774557 or sales@vajravyuh.com with your specification and required delivery date.
What valves are required for API 6D pipeline service?
API 6D (Pipeline and Piping Valves) specifies gate, plug, ball, and check valves for pipeline service. The standard covers design, materials, dimensions, testing, and documentation. All isolation valves on a pipeline must be API 6D certified; this is a contractual requirement in ONGC, GAIL, and most oil company pipeline standards.
What is a fire-safe valve and why is it required for pipelines?
A fire-safe valve maintains seat sealing integrity and stem packing containment in the event of an external fire (tested per API 607 / API 6FA). This prevents a valve leak from feeding a hydrocarbon fire. Fire-safe design is mandatory for all valves handling flammable hydrocarbons under Indian OISD standards and most international oil company specifications.

Other Application Guides for Ulsan

Pharmaceutical & Biotech (Cleanroom / Hygienic)LNG & Cryogenic ServiceWater Treatment & DesalinationRefinery & Petrochemical ProcessPower Generation (Thermal, Gas, Hydro)Marine & Offshore ServiceMining & Mineral ProcessingHVAC & Building ServicesChemical & Petrochemical ProcessingHygienic Food & Beverage ProcessingHydrogen & Clean Energy ServiceDesalination & High-Purity WaterPulp & Paper Industry

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Oil & Gas Pipelines Valves — Ulsan

Send your specification — quote within 24 hours with full documentation.

Request a Quote sales@vajravyuh.com +91 9979774557

Standards

API 6D
API 6FA (Fire Test)
NACE MR0175 / ISO 15156
ASME B16.34
API 598 (Testing)
ISO 14313
API 607

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