API 5L Certified ISO 9001:2015 CE Marked

Premium Steel Pipes for Global Infrastructure

Hydrosteel International manufactures square, round, galvanized, and stainless steel pipes for construction, energy, and industrial projects worldwide.

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15+
Years Experience
50+
Countries Served
100K
Tons / Year
200+
Global Clients
Product Range

Engineered Steel Solutions

From structural hollow sections to corrosion-resistant coated pipes, certified for demanding applications.

Square / Rectangular Pipe

Square & Rectangular Pipe

Structural hollow sections for construction, machinery, and infrastructure. Sizes 15×15mm to 400×400mm.

Chemical Composition (%)
GradeCMnSP
Q1950.06-0.120.25-0.50≤0.050≤0.045
Q235B0.12-0.200.30-0.70≤0.045≤0.045
S355≤0.24≤1.60≤0.035≤0.035
Mechanical Properties
GradeYield (MPa)Tensile (MPa)Elongation
Q195≥195315-430≥33%
Q235B≥235375-500≥26%
S355≥355470-630≥22%
ASTM A500 / EN 10219 / JIS G3466
Round Steel Pipe

Round Steel Pipe

ERW and seamless round pipes for fluid transport, structural support, and mechanical applications.

Chemical Composition (%)
GradeCMnSP
Q235B0.12-0.200.30-0.70≤0.045≤0.045
20#0.17-0.240.35-0.65≤0.035≤0.035
API 5L B≤0.28≤1.20≤0.030≤0.030
Mechanical Properties
GradeYield (MPa)Tensile (MPa)Elongation
Q235B≥235375-500≥26%
20#≥245≥410≥25%
API 5L B≥241≥414≥23%
ASTM A53 / API 5L / EN 10255
Galvanized Pipe

Galvanized Steel Pipe

Hot-dip galvanized pipes for outdoor, marine, and corrosion-resistant applications with long service life.

Chemical Composition (%)
GradeCMnSP
Q1950.06-0.120.25-0.50≤0.050≤0.045
Q235B0.12-0.200.30-0.70≤0.045≤0.045
St37-2≤0.17≤1.40≤0.045≤0.045
Mechanical Properties
GradeYield (MPa)Tensile (MPa)Elongation
Q195≥195315-430≥33%
Q235B≥235375-500≥26%
St37-2≥235340-470≥25%
ASTM A53 / BS 1387 / EN 10240
Stainless Steel Pipe

Stainless Steel Pipe

SS304/316L corrosion-resistant pipes for food, chemical, marine, and pharmaceutical applications.

Chemical Composition (%)
GradeCrNiMoC
SS30418.0-20.08.0-10.5-≤0.08
SS316L16.0-18.010.0-14.02.0-3.0≤0.03
SS20116.0-18.03.5-5.5-≤0.15
Mechanical Properties
GradeYield (MPa)Tensile (MPa)Elongation
SS304≥205≥515≥40%
SS316L≥170≥485≥40%
SS201≥275≥520≥40%
ASTM A312 / ASTM A554 / EN 10296
Galvanized Steel Coil

Galvanized Steel Coil

Hot-dip galvanized steel coils for roofing, automotive parts, appliances, and construction panels.

Chemical Composition (%)
GradeCMnSP
DX51D≤0.07≤0.60≤0.030≤0.030
SGCC≤0.15≤0.80≤0.050≤0.050
S350GD≤0.20≤1.60≤0.035≤0.035
Mechanical Properties
GradeYield (MPa)Tensile (MPa)Elongation
DX51D≥140270-500≥22%
SGCC≥205≥270≥20%
S350GD≥350≥420≥15%
JIS G3302 / ASTM A653 / EN 10346
Color Coated Steel Coil

Color Coated Steel Coil

PPGI/PPGL prepainted steel coils in custom colors and coatings for roofing, cladding, and decorative panels.

Chemical Composition (%)
GradeCMnSP
CGCC≤0.12≤0.60≤0.035≤0.035
DX51D+Z≤0.07≤0.60≤0.030≤0.030
TSGCC≤0.15≤0.80≤0.035≤0.035
Coating Properties
PropertyTop CoatBack CoatCoating Thickness
PE≥20μm≥7μm15-25μm
PVDF≥25μm≥10μm20-30μm
HDP≥20μm≥7μm15-25μm
JIS G3312 / ASTM A755 / EN 10169
Global Projects

Steel in Action Worldwide

Trusted by major infrastructure and energy projects across 50+ countries.

Oil and gas pipeline construction site
🇸🇦 Saudi Arabia

Oil & Gas Pipeline

API 5L X65 LSAW pipes · 12,000 tons

Commercial high-rise building construction
🇦🇪 UAE

Commercial Tower

Galvanized structural pipes · 5,800 tons

Offshore wind turbine foundation
🇩🇪 Germany

Offshore Wind Farm

SS316L offshore pipes · 3,200 tons

Port terminal with steel pipe structures
🇧🇷 Brazil

Port Expansion

Hot-dip galvanized pipes · 4,500 tons

Industrial steel warehouse with stacked steel materials
🇮🇳 India

Industrial Steel Plant

Square structural pipes · 6,200 tons

Steel bridge structure and construction
🇵🇭 Philippines

Bridge Construction

ERW round pipes · 8,500 tons

Industry Presence

Global Trade Shows

Meet us at the world's leading steel and construction industry events

2024
EDIFICA (Chile Construction Show)
📍 Santiago, Chile · Oct 15 – 17, 2024
The largest and most professional construction exhibition in Chile and Latin America. It covers building materials, construction machinery and green building technologies, serving as a key platform to explore the South American market.
2023
THE BIG 5 / Big 5 Global (Dubai)
📍 Dubai, UAE · Dec 4 – 7, 2023
The top construction exhibition across the Middle East, Africa and South Asia. It features building materials, hardware, sanitary ware, HVAC and engineering machinery, a preferred platform for entering the Middle Eastern market.
2023
EXCON 2023 (Peru Construction Show)
📍 Lima, Peru · Oct 18 – 21, 2023
Peru's premier professional construction exhibition. It focuses on building materials, construction equipment, interior decoration and eco-building solutions, connecting suppliers with buyers in Peru and the Andean region.
2024
Tube Düsseldorf (Germany)
📍 Düsseldorf, Germany · Apr 15 – 19, 2024
The world's top professional trade fair for pipe and tube industry. Held biennially, it covers all kinds of pipes, pipe fittings, production machinery, testing equipment and related technologies. It is a vital platform for accessing European and global high-end pipe markets.
2024
Canton Fair (China Import and Export Fair)
📍 Guangzhou, China · Oct 15 – Nov 4, 2024
China's largest comprehensive international trade event. The building materials section includes ceramics, sanitary ware, doors & windows, hardware and smart home products, attracting global purchasers worldwide.
2025
BUILDTECH ASIA (Singapore)
📍 Singapore · Mar 18 – 20, 2025
A leading trade show for construction technology and building materials in Asia Pacific. It highlights smart construction, green materials and interior furnishing, ideal for developing high-end Southeast Asian markets.
2025
EXPOCONSTRUCCIÓN & EXPODISEÑO (Colombia)
📍 Bogotá, Colombia · May 20 – 25, 2025
The most influential exhibition for construction materials and interior design in northern South America. It covers building products, engineering services and design solutions for Colombia and surrounding markets.
Growth Track Record

15 Years of Excellence

From founding to industry leadership — a journey of consistent growth and global trust

2008

Company Founded

Established in Tianjin, China with a vision for premium steel manufacturing

2012

First Export to SE Asia

Broke into Southeast Asian markets — Vietnam, Thailand, Indonesia

2015

South America Breakthrough

Expanded into Chile, Peru & Colombia — building long-term partnerships

2020

Global Expansion

Reached 50+ countries across 6 continents — truly global footprint

2025

Industry Leader

Annual export volume exceeds 200K tons — recognized as top-tier steel exporter

200K 150K 100K 50K 0
80K
2019
120K
2020
150K
2021
160K
2022
180K
2023
200K
2024
Quality Assurance

Quality Control You Can Verify

Every order passes through 8 rigorous inspection checkpoints before shipment.

🔬

Chemical Analysis

Spectrometer testing for all steel grades and coatings.

📏

Dimensional Check

OD, wall thickness, length, and squareness verified per standard.

⚡

Mechanical Testing

Tensile, yield, and elongation tests for every batch.

🛡️

Surface Inspection

Visual and eddy-current checks for defects and finish.

🧪

Coating Tests

Zinc weight, adhesion, and salt-spray corrosion testing.

📋

Mill Certification

MTC issued per EN 10204 3.1 or 3.2 as required.

📦

Loading Supervision

Weight count, bundling, and moisture protection inspection.

🌍

Third-Party Inspection

SGS, BV, Intertek, or client-appointed inspectors welcome.

Factory Tour

See How We Manufacture Excellence

Take a virtual walk through our 180,000m² production base in Tianjin, China.

Client Feedback

What Our Partners Say

Long-term relationships built on quality, delivery, and transparency.

★★★★★

Hydrosteel has been our reliable pipe supplier for 6 years. Their API 5L pipes consistently pass third-party inspection and arrive on schedule.

Ahmed Al-Rashid
Ahmed Al-Rashid Procurement Manager, Saudi Arabia
★★★★★

The square pipe quality is excellent, and their mill test certificates are always complete and transparent. Highly recommended.

Maria Santos
Maria Santos Operations Director, Brazil
★★★★★

We imported galvanized coils for three container projects. Coating uniformity, packing, and documentation were all first-class.

Lukas Weber
Lukas Weber Project Engineer, Germany
Client Visits

Trusted by Global Partners

Clients from around the world visit our factory to inspect quality firsthand.

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About Us

Your Reliable Steel Partner Since 2008

Hydrosteel International (Tianjin) Co., Ltd. is a professional manufacturer and exporter of steel pipes and coils, headquartered in China's largest steel production hub — Tianjin.

Our 180,000m² production base houses 13 advanced production lines with an annual capacity exceeding 1,000,000 tons. We serve clients in 50+ countries across construction, oil & gas, infrastructure, and manufacturing sectors.

Every product is backed by rigorous quality control, competitive pricing, and on-time delivery guaranteed by our experienced logistics team.

🏭180,000m² Factory
⚙️13 Production Lines
📦1000K+ Tons/Year
🚢Global Shipping
Container loading - Steel pipes Container loading - Steel coils Container loading - Round pipes Container loading - Blue coated pipes Container loading - Square tubes
Get in Touch

Request a Quote

Tell us your specifications and our sales engineers will respond within 24 hours.

Contact Information

📍
Address Wuqing Development Zone, Tianjin, China
📞
Phone 008615822865740
✉️
Email admin@hydrosteelpipe.com
🌐
Website www.hydrosteelpipe.com