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Low-temperature service section steel
| Grade | Yield Strength ReH/MPa | Tensile Strength Rm/MPa | Elongation After Fracture A/% | Impact Test | |||
| ≤16mm | ＞16≤40mm | ＞3≤100mm | ＞3≤40mm | Temperature/°C | Impact Absorbed Energy KV2/J | ||
| S355J2 | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -20 | ≥27 |
| S355J2+AR | |||||||
| S355J2+N | |||||||
| S355K2 | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -20 | ≥40 |
| S355N | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -20 | ≥40 |
| S355NL | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -40 | ≥31 |
| -50 | ≥27 | ||||||
| S355M | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -20 | ≥40 |
| S355ML | ≥355 | ≥345 | 470～630 | L₀=5.65√S₀ | ≥22 | -40 | ≥31 |
| -50 | ≥27 | ||||||
| Grade | Yield Strength ReH/MPa | Tensile Strength Rm/MPa | Tensile Specimen Gauge Length /mm | Elongation /% | Yield Ratio |
| GR50 | ≥345 | ≥450 | 200 | ≥18 | – |
| 50 | ≥21 | – | |||
| A992 | 345-450 | ≥450 | 200 | ≥18 | ≤0.85 |
| 50 | ≥21 |
Jumbo H-beam Product
GB standard : HW498*432, ASTM standard : W14*665
Characteristic: The web thickness is around 71.9mm
Applications:
Heavy Industrial Buildings — Main framework columns and beams in heavy-duty structures such as steel mills, power plants, and petrochemical facilities
Long-Span Bridges — Main girders and bridge deck longitudinal beams of large steel bridges
Super High-Rise Buildings — Mega columns at lower levels and transfer floor components in high-rise steel structures
Offshore Engineering — Jacket structures and trestle bridges for offshore platforms
Stadiums and Large-Span Public Buildings — Main roof girders, bearings, and critical load-bearing components
Key Components in Seismic Design — Special thickened-section columns in Special Moment Frames (SMF)
Heavy Equipment Support Structures — Foundations for large mechanical equipment, generator/turbine pedestals
Aerospace Launch Facilities — Launch towers, Vertical Assembly Buildings (VAB), and other heavy-duty structures subjected to immense impact and vibration
Extreme Specification Products
Maximum flange width of 500mm (H500×500×25×25); maximum section height of 1172mm (W44 series); maximum flange thickness of 140mm (UC356×406×1299)
Custom-made
Non-standard hot-rolled H-section steel: “derived sections” optimized from standard sections, and “custom-designed sections” developed from new designs.
With the same set of universal rolling rolls, the produced hot-rolled H-section steel has a fixed web height (Hw) and a fixed half-flange overhang width (bf). “Derived sections” are those that can be produced by adjusting the roll gap with the same set of rolls used for a standard section. Developed from existing standard sections, “derived sections” offer advantages over “custom-designed sections” in terms of development cost and lead time. The optimized section height, width, and thickness dimensions shall all fall within the limit range. In principle, the ratio of flange thickness to web thickness shall be controlled within 1.0–2.0.
Our Fabrication
Our company is equipped with over 50 sets of advanced domestic steel structure processing equipment, including a 20,000W laser cutting machine, integrated H-beam and box-type assembly machines, integrated submerged arc welding machines for section and box steel, a Model 60 straightening machine, a Model 1622 pass-through shot blasting and rust removal machine, CNC machine tools, automatic bevel welding machines, and horizontal suction spray painting booths.
01
Raw Material Cutting
Raw steel is cut to the required dimensions using saws, shears, or plasma-cutting machines, depending on the steel’s type and thickness.
02
Perforating
A perforated steel structure refers to a metal component formed by punching regular holes in the steel surface through a stamping process, which is widely applied in fields such as architectural decoration, mechanical protection, and acoustic noise reduction
03
Cut-to-Length (CTL)
The process involves uncoiling steel coils, flattening them to a straight, level state using levelling equipment, and shear-cutting them into fixed-length flat steel plates
04
Roll Forming
This is a continuous bending process used to shape long strips of metal (typically from coils) into desired cross-sectional profiles.
05
Welding
This process uses the heat of a flame or an electric arc to heat small areas of metal contact points, melting and fusing the metals
06
Shot Blasting Pre-treatment
This process uses centrifugal force to hurl abrasives at high speed onto the steel surface, removing scale and rust
07
Slitting
The processing procedure of cutting and edge-trimming steel coils along their longitudinal direction (the length of the steel strip) into narrower strips
08
Galvanizing
Galvanizing is the surface treatment process of coating a layer of zinc on the surfaces of metals, alloys, or other materials to provide aesthetic appeal and rust protection
CONTACT US
Projects
National Stadium (Bird’s Nest）
Location: Beijing, China
Gross Floor Area (GFA): 258,000 square meters
Building Height: 68.5 meters
Steel Structure Weight: Approximately 42,000 tons
Building Function: Sports Facility / Olympic Stadium
Completion Year: 2008
Shanghai World Expo Center
Location: Shanghai, China
Gross Floor Area (GFA): Approximately 140,000 square meters
Building Function: Convention & Exhibition Center
Completion Year: 2010
Beijing Daxing International Airport
Location: Beijing, China
Gross Floor Area (GFA): 258,000 square meters
Building Height: 68.5 meters
Steel Structure Weight: Approximately 42,000 tons
Building Function: Sports Facility / Olympic Stadium
Completion Year: 2008
Habtoor Crystal Residences Tower
Location: Dubai, United Arab Emirates
Building Height: Approximately 238 meters
Building Type: High-rise Residential Building
Building Function: Luxury Residential Tower
Steel Structure Weight: Approximately 8,265 tons
Al Maktoum International Airport
Location: Dubai, United Arab Emirates
Building Function: International Airport / Aviation Hub
Development Status: Expansion Project
Yamal LNG Project
Location: Sabetta, Yamal Peninsula, Yamalo-Nenets Autonomous District, Russia LNG Production Capacity:16.5 million tons per year (3 × 5.5 Mtpa) Gas Condensate Production Capacity:
Up to 1.2 million tons per year Project Function: LNG Production Facility / Arctic Energy Infrastructure Project Owner: JSC Yamal LNG Main Shareholders: NOVATEK, TotalEnergies, CNPC, Silk Road Fund Completion Year: 2018
Shougang Peru Mining 5 Million Tons/Year Concentrator Plant Steel Structure Procurement Project
Location: Marcona, Ica Region, Peru Project Capacity: 5 million tons/year concentrator plant
Project Function: Iron Ore Concentration Plant / Mining Processing Facility Main Processes:
Steel Structure Detailing
Raw Material Inspection
Cutting and Fabrication
Welding
Surface Treatment
Packing and Shipment
Contractor:
China MCC Tiangong Group Urban Construction Branch
(MCC Tiangong Urban Construction Company)
Saudi CEER Automotive Project Phase II Steel Structure Work
Location: King Abdullah Economic City (KAEC), Jeddah, Saudi Arabia Project Function: Automotive Manufacturing Facility / Industrial Production Plant Site Area: Approximately 714,000 square meters Gross Floor Area (GFA): Approximately 290,000 square meters External Works Area: Approximately 425,000 square meters Main Contractor: China MCC Tiangong Group Golden Structure Company (MCC Tiangong Jinjie Company)
Saudi Arabia Red Sea Public Utilities Infrastructure Project
Location: Red Sea Islands Development Zone, Saudi Arabia Development Area: Approximately 28,000 square kilometres Steel Structure Weight: Approximately 6,000 tons Project Function: Public Utilities Infrastructure Fabrication Contractor: CSCEC Steel Dubai Factory EPC Contractor: Shandong Electric Power Construction Corporation III (SEPCO III)
Inner Mongolia Baotou 100,000 Tons/Year Polysilicon Project
Location: Baotou City, Inner Mongolia Autonomous Region, China Project Function: High-Purity Polysilicon Production Facility / New Energy Material Plant Site Area: Approximately 773,584 square meters (Phase I project area) Building Area: Approximately 4,710 square meters (Newly constructed area)
Xinjiang Xinte Energy Zhundong 100,000 Tons/Year High-End Electronic-Grade Polysilicon Project
Location:
Zhundong Economic and Technological Development Zone, Changji Hui Autonomous Prefecture, Xinjiang, China
Project Function:
High-End Electronic-Grade Polysilicon Production Facility / New Energy Material Plant
Production Capacity:
100,000 tons/year (Phase I). Total Planned Capacity:
200,000 tons/year (Phase I & Phase II)
Investment:
Approximately RMB 17.6 billion
Project Owner:
Xinte Energy Co., Ltd. / Xinjiang Xinte Silicon Materials Co., Ltd.
Hong Kong–Zhuhai–Macao Bridge (HZMB)
Location: Pearl River Estuary, Guangdong Province, China, connecting Hong Kong, Zhuhai, and Macao Project Function: Cross-Sea Bridge and Tunnel / Expressway Transportation Infrastructure Project Type: Cross-Sea Bridge / Super Major Bridge / Highway Bridge / Cable-Stayed Bridge Total Length: Approximately 55 km Main Bridge Length: Approximately 29.6 km Bridge-and-Tunnel Section: Approximately 55 km Roadway Configuration: Six-lane, two-way expressway Bridge Width: Approximately 33.1 m Construction Start: December 15, 2009 Opening Date: October 24, 2018
Hangzhou Bay Cross-Sea Bridge Project
Location: Hangzhou Bay, Zhejiang Province, China, connecting Haiyan and Cidong Project Function: Cross-Sea Expressway Bridge / Transportation Infrastructure Project Type: Super Major Bridge / Highway Bridge / Cross-Sea Bridge / Cable-Stayed Bridge Total Length: Approximately 36 km Width: Approximately 33 m Roadway Configuration: Six-lane, two-way expressway Start and End Points: Haiyan Interchange to Andong Interchange Expressway Route: G15 Shenyang–Haikou Expressway Construction Start: June 8, 2003 Opening Date: May 1, 2008 Construction Start: June 8, 2003 Opening Date: May 1, 2008
Qinghai–Tibet Railway and Sichuan–Tibet Railway Project
Location: King Abdullah Economic City (KAEC), Jeddah, Saudi Arabia Project Function: Automotive Manufacturing Facility / Industrial Production Plant Site Area: Approximately 714,000 square meters Gross Floor Area (GFA): Approximately 290,000 square meters External Works Area: Approximately 425,000 square meters Main Contractor: China MCC Tiangong Group Golden Structure Company (MCC Tiangong Jinjie Company)
Mengxi–Beijing–Tianjin–Hebei UHVDC Power Transmission Project
Location: Dalat Banner, Ordos, Inner Mongolia, China to Cangzhou, Hebei Province, China, via Shanxi Province Project Function: Ultra-High-Voltage Direct Current (UHVDC) Power Transmission / Renewable Energy Transmission Infrastructure Project Type: ±800 kV UHVDC Transmission Project / Cross-Provincial Renewable Energy Transmission Project
Baihetan–Zhejiang ±800 kV UHVDC Transmission Project
Location: Baihetan Hydropower Station, Sichuan Province, to the Northern Zhejiang Converter Station in Hangzhou, Zhejiang Province, China, via Sichuan, Chongqing, Hubei, Anhui, and Zhejiang Project Function: Ultra-High-Voltage Direct Current (UHVDC) Power Transmission / Clean Energy Transmission Infrastructure Project Type: ±800 kV UHVDC Transmission Project / West-to-East Power Transmission Project
Longdong–Shandong ±800 kV UHVDC Transmission Project
Location: Qingyang, Gansu Province, to Dongping, Tai’an, Shandong Province, China, passing through Gansu, Shaanxi, Shanxi, Hebei, and Shandong Provinces Project Function: Ultra-High-Voltage Direct Current (UHVDC) Power Transmission / Renewable Energy Transmission Infrastructure Project Type: ±800 kV UHVDC Transmission Project Transmission Line Length: Approximately 927 km Rated Voltage: ±800 kV Rated Transmission Capacity: 8 G Project Start: March 16, 2023 Commissioning Date: May 8, 2025
Shandong Haiyang Nuclear Power Plant Units 3 & 4 Project
Location: Haiyang, Shandong Province, China Project Function: Nuclear Power Generation / Clean Energy Infrastructure Project Type: CAP1000 Nuclear Power Project Project Phase: Phase II of the Haiyang Nuclear Power Project Unit Capacity: 1.253 GW per unit Number of Units: 2 units — Units 3 & 4 Total Capacity: Approximately 2.506 GW Design Life: 60 years Construction Start: July 2022 Planned Full Operation: 2027
Fujian Zhangzhou Nuclear Power Plant Units 3 & 4 Project
Location: Zhangzhou, Fujian Province, China Project Function: Nuclear Power Generation / Clean Energy Infrastructure Project Type: Hualong One (HPR1000) Nuclear Power Project Project Phase: Phase II of the Zhangzhou Nuclear Power Project Technology: Hualong One (HPR1000) Third-Generation Nuclear Power Technology Construction and Equipment Installation Unit Capacity: Million-kilowatt-class nuclear power units Project Status: Under Construction — Civil
Qingzhou 6 Offshore Wind Power Project
Location: Offshore waters near Yangjiang, Guangdong Province, China Project Function: Offshore Wind Power Generation / Offshore Power Transmission Infrastructure Project Type: Offshore Wind Farm / 330 kV Offshore Booster Station Project Ownership: China Three Gorges Renewables (Yangjiang) Power Generation Co., Ltd. Planned Installed Capacity: Approximately 1,000 MW Booster Station Capacity: 1,000 MW / 330 kV Booster Station Weight: Approximately 6,800 tons Construction Start: August 2022