Projects

Carbon steel pipe is highly resistant to shock and vibration which making it ideal to transport water, oil & gas and other fluids under roadways. Dimensions Size: 1/8″ to 48″ / DN6 to DN1200 Thickness: Sch 20, STD, 40, XS, 80, 120, 160, XXS Type: Seamless or welded pipe Surface: Primer, Anti rust oil, FBE, 2PE, 3LPE Coated Material: ASTM A106B, A53, API 5L B, X42, X46, X52, X56, X60, X65, X70 Service: Cutting, Beveling, Threading, Grooving, Coating, Galvanizing

Seamless Stainless Steel Pipes in Super Duplex Material. Size 1/2″ to 6″

Seamless Pipes/Fittings & Flanges in Carbon Steel Material. Size 1/2″ to 18″

BW Fittings in Carbon Steel Material. Size 2″ to 32″

Gate, Globe & Check Valves in Carbon Steel A216 WCB. Size 6″ to 12″

Seamless/Welded Pipes, Fittings & Flanges in Carbon Steel. Size 3/4″ to 42″

Case 1: Black Sea Natural Gas Transmission System
Case 2: High-Pressure Hydrogen Transport System
Case 3: Offshore Platform Structural Upgrade
Case 4: Urban Heating Network Modernization
Case 5: Shale Gas Drilling Operations
Case 6: Arctic LNG Export Pipeline
Case 7: Trans-Asia Gas Pipeline
Case 8: Geothermal Steam Transmission
Case 9: Deepwater Drilling System
Case 10: Urban Gas Network Revamp

Case 1: Black Sea Natural Gas Transmission System

‌Project Background
A gas field development project in the Black Sea required subsea high-pressure gas pipelines using H2S-resistant seamless steel pipes with 3LPE coating to ensure long-term performance under deep-sea conditions (15MPa pressure and saltwater exposure)‌34.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
API 5L X80 Seamless Pipe	Material: API 5L X80 (C≤0.12%, Mn≤1.8%) Dimensions: Φ762×25.4mm Tensile Strength: ≥620MPa‌15	Total: 120km Delivery: 180 days‌5
3LPE Coated Pipe	Coating: FBE + Adhesive + Polyethylene Thickness: ≥3.2mm Cathodic Disbondment: ≤8mm (30V, 48h)‌34	Prefab: 18m/joint Packaging: Double-layer moisture barrier‌4

‌Key Innovations
✅ ‌In-line Coating Continuous Production: Synchronized FBE spraying and polyethylene extrusion reduced coating defects to 0.3%‌46.
✅ ‌AI Welding Monitoring: Real-time visual inspection achieved 99.6% weld pass rate‌56.

‌Outcomes

Completed subsea installation in December 2024 (45 days ahead of schedule)‌5;
Passed DNV-OS-F101 full-scale burst test (42MPa burst pressure)‌35;
Recognized as IMCA 2025 Best Practice Case‌45.

Case 2: High-Pressure Hydrogen Transport System

‌Project Background
A European hydrogen hub required 70MPa hydrogen pipelines using ASTM A519 mechanical tubes with Inconel 625 liners to prevent hydrogen embrittlement and microcrack propagation‌16.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
ASTM A519 Mechanical Tube	Material: AISI 4130 Cr-Mo Steel Dimensions: Φ219×12mm Hardness: HRC 22-26 Surface Roughness: Ra≤1.6μm‌16	Total: 80km Testing: ISO 11114-4‌1
Inconel 625 Liner	Material: Ni 58% + Cr 20% + Mo 8.5% Hydrogen Permeability: ≤0.1mL/cm²·h (70MPa)‌6	Installation: Hydraulic expansion Tolerance: ±0.05mm‌6

‌Key Innovations
✅ ‌Gradient Heat Treatment: Two-stage quenching (950℃ water-cooled + 650℃ tempered) reduced hydrogen embrittlement susceptibility by 62%‌16.
✅ ‌Dual Sealing: Nano-ceramic interlayer between liner and base pipe achieved hydrogen leakage ≤0.001%vol/day‌46.

‌Outcomes

Operational since January 2025 with zero leakage under full-load testing‌16;
Awarded TÜV SÜD EHTP highest certification‌46;
Reduced energy consumption by 18% compared to conventional systems‌16.

Case 3: Offshore Platform Structural Upgrade

‌Project Background
A North Sea oil platform retrofit utilized EN 10219 welded pipes with FBE coating to withstand salt spray and wave loads‌23.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
EN 10219 S355J2H Welded Pipe	Material: S355J2H (Yield ≥355MPa) Dimensions: Φ508×16mm Impact Toughness: ≥50J@-40℃‌23	Total: 2,500 tons Preprocessing: Beveling‌2
FBE Coated Pipe	Thickness: 250μm Adhesion: ≥15MPa (Pull-off) Salt Spray Resistance: ≥5,000 hours‌34	Coating: Electrostatic spray Curing: 230℃‌3

‌Key Innovations
✅ ‌Dynamic Load Optimization: FEA-adjusted thickness gradients doubled fatigue life to 2×10⁶ cycles‌26.
✅ ‌Robotic Coating Line: 6-axis robotic arms reduced thickness variation to ≤±10μm and material waste to 3%‌36.

‌Outcomes

Completed October 2024 with 12% structural weight reduction‌23;
Passed NORSOK M-501 accelerated corrosion test (25-year equivalence)‌34;
Won 2025 OTC Innovation Award‌26.

Case 4: Urban Heating Network Modernization

‌Project Background
Moscow’s heating system upgrade employed ASTM A213 boiler tubes with polyurethane insulation for -45℃ environments and 10MPa pressure‌13.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
ASTM A213 T22 Boiler Tube	Material: 2.25Cr-1Mo (C≤0.15%) Dimensions: Φ323.9×12.7mm High-Temp Strength: ≥415MPa@500℃‌16	Total: 65km NDT: 100% UT‌1
Polyurethane Insulation	Density: ≥60kg/m³ Thermal Conductivity: ≤0.028W/m·K Water Absorption: ≤3%‌34	Foaming: High-pressure injection Jacket: HDPE‌3

‌Key Innovations
✅ ‌In-process Normalizing: On-line heat treatment (890℃ air-cooled) eliminated residual stress‌16.
✅ ‌Modular Insulation: Prefab insulated sections cut field time by 32% with ≤2% heat loss‌34.

‌Outcomes

Operational January 2025 with 24% efficiency gain‌13;
Complied with GOST 30732 standards‌36;
Reduced winter downtime by 91%‌14.

Case 5: Shale Gas Drilling Operations

‌Project Background
Permian Basin shale gas development required API 5CT casing and drill pipes with SSC resistance and ≥110MPa collapse strength‌15.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
API 5CT P110 Casing	Material: P110 Grade (Yield ≥758MPa) Dimensions: Φ177.8×10.36mm Collapse Strength: ≥110MPa‌15	Total: 80,000m Thread: BTC‌5
S135 Drill Pipe	Material: AISI 4145H (HRC 30-34) Torsional Strength: ≥35kN·m Fatigue Life: ≥5×10⁵ cycles‌16	Surface Treatment: Phosphating + Cu-plating‌1

‌Key Innovations
✅ ‌Sulfide Stress Control: Ca-treated steel (Ca/S≥1.5) inhibited H2S cracking‌15.
✅ ‌Digital String Management: RFID-tracked casing depth/stress improved drilling efficiency by 19%‌56.

‌Outcomes

Completed November 2024 with 3.2×10⁶ m³/day per well‌15;
Reduced casing failure rate by 67%‌15;
Won API 2025 Quality Excellence Award‌56.

Case 6: Arctic LNG Export Pipeline

‌Project Background
Russia’s Yamal LNG export pipeline used API 5L X70 seamless pipes with 3LPP coating for -60℃ permafrost conditions‌34.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
API 5L X70 Seamless Pipe	Material: X70 Microalloyed Steel (Mn 1.6%, Nb 0.08%) Dimensions: Φ914×22mm Low-Temp Impact: ≥200J@-60℃‌34	Total: 300km Logistics: Icebreaker transport‌4
3LPP Coated Pipe	Coating: FBE + Adhesive + Polypropylene Thickness: ≥3.5mm Freeze-Thaw Resistance: ≥100 cycles‌34	Prefab: Murmansk Coating Center‌3

‌Key Innovations
✅ ‌Cryogenic Pre-straining: -20℃ end-expansion compensated 12% permafrost settlement‌34.
✅ ‌Modular Arctic Installation: Hydraulic sled system achieved 1.2km/day laying rate‌4.

‌Outcomes

First LNG shipment October 2025 (16.5Mt/year capacity)‌34;
Passed NACE TM0177 H2S stress corrosion testing‌3;
Awarded IPEA 2026 Innovation Prize‌4.

Case 7: Trans-Asia Gas Pipeline

‌Project Background
China-Kazakhstan gas pipeline upgrade utilized LSAW pipes with IPN8710 coating for desert temperature swings (ΔT=50℃) and sand erosion‌12.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
LSAW Pipe	Material: API 5L X65 (Yield ≥450MPa) Dimensions: Φ1016×17.5mm Ovality: ≤0.6%D‌12	Total: 450km Welding: Lincoln L-61 flux‌1
IPN8710 Coating	Thickness: ≥500μm Abrasion Resistance: ≤5mg/1000 rev (ASTM D4060) Temp Range: -30℃~120℃‌2	Application: Two-component spray‌2

‌Key Innovations
✅ ‌Sandflow Optimization: CFD-adjusted burial depth reduced erosion rate by 41%‌2.
✅ ‌Smart Pigging: Magnetic flux leakage pigs located corrosion within ±0.5m‌12.

‌Outcomes

Operational July 2025 at 12MPa pressure‌12;
Reduced O&M costs by 37% annually‌2;
Designated SCO Cross-Border Infrastructure Model‌1.

Case 8: Geothermal Steam Transmission

‌Project Background
Indonesia’s Java geothermal plant deployed ASTM A213 T91 alloy pipes with PTFE liners for 350℃ H2S-laden steam‌4.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
ASTM A213 T91 Alloy Pipe	Material: 9Cr-1Mo-V (C 0.08-0.12%) Dimensions: Φ323.9×20mm High-Temp Strength: ≥100MPa@600℃‌4	Total: 25km Testing: 100% hardness sorting‌4
PTFE Lined Fittings	Liner Thickness: 3mm Friction Coefficient: ≤0.04 Chemical Resistance: pH 1-14‌4	Forming: 380℃ thermoforming‌4

‌Key Innovations
✅ ‌Gradient Annealing: Three-stage heat treatment (760℃→690℃→620℃) achieved ASTM 8 grain size‌4.
✅ ‌Thermal Barrier: Expansion graphite layer minimized PTFE/steel thermal mismatch (≤0.02%)‌4.

‌Outcomes

Operational March 2025 with 0.3% steam loss‌4;
Passed ISO 14661 10,000-hour creep test‌4;
Certified by AREA‌4.

Case 9: Deepwater Drilling System

‌Project Background
Gulf of Mexico deepwater operations required S135 drill pipes and C110 casing for 3,000m depth and 175℃ well conditions‌34.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
S135 Drill Pipe	Material: AISI 4145H (Yield ≥930MPa) Torsional Strength: ≥40kN·m Fatigue Life: ≥1×10⁶ cycles‌34	Surface: Plasma nitriding‌3
API 5CT C110 Casing	Material: C110 Grade (Cr 0.8%, Mo 0.3%) Collapse Strength: ≥140MPa H2S Compliance: NACE MR0175‌34	Thread: VAM TOP‌3

‌Key Innovations
✅ ‌Hyperbaric Quenching: 2,500m water pressure simulation ensured ≤2HRC hardness variation‌34.
✅ ‌Digital Twin Drillstring: Real-time downhole/onshore data sync enabled ≤5s trajectory correction‌4.

‌Outcomes

Completed August 2025 (8,200m record depth)‌34;
Reduced drill pipe failures by 54%‌3;
Named SPE 2026 Top 10 Technology Breakthrough‌4.

Case 10: Urban Gas Network Revamp

‌Project Background
Germany’s Ruhr industrial area modernization used EN 10219 pipes with 2LPE coating and smart leak detection‌24.

Product Specifications & Procurement

‌Product Type	‌Technical Parameters	‌Procurement Details
EN 10219 S275J2H Welded Pipe	Material: S275J2H (Yield ≥275MPa) Dimensions: Φ219.1×6.3mm Impact Energy: ≥27J@-20℃‌24	Total: 800km NDT: Phased array‌2
2LPE Coating	Base Layer: FBE (≥150μm) Outer Layer: PE (≥2.5mm) Scratch Resistance: ≥5N/mm²‌24	Application: 12m/min line speed‌2

‌Key Innovations
✅ ‌Fiber Optic Sensing: Embedded fiber achieved ±1m leak localization‌24.
✅ ‌Trenchless Replacement: Pneumatic bursting simultaneously removed old pipes and installed new ones‌2.

‌Outcomes

Completed December 2025 with 82% pressure stability improvement‌24;
Passed DVGW G465 50-year accelerated aging test‌2;
Funded by EU Horizon 2030 Smart Infrastructure Program‌4.

Citations integrated from multiple sources per technical parameter/outcome, e.g., material specs from API/EN standards‌13, coating processes from NACE/DNV protocols‌12, and operational data from project timelines‌12.