Cangzhou Spiral Steel Pipes Group Co.ltd
The Solid Foundation for Project SuccessIrrigation Pipeline
Irrigation Pipelines Engineered to International Code: Flow Farther, Join Less, Last Longer
An irrigation pipeline is the artery of your farmland. Every joint is a cost. Every leak is a loss. Every day of delay is a crop at risk. As China's largest spiral welded pipe manufacturer, we don't just supply steel tubes — we deliver fully code-compliant water security for the world's most demanding agricultural projects, from World Bank-funded schemes to private mega-farms.
OD: 219-3620mm
Length: 1-18M Or Custom
Wall Thickness: 5-24.5 Meter
Standard: API 5L AWWA C200 ISO 3183 EN 10208 / EN 10217 AS 1579 JIS G 3452 / G 3457 GB/T 3091 / SY/T 5037, etc.
Steel Grade: Gr.B X42 X46 X52 X60 X70 A36 A572 Gr.50 A572 Gr.60 P235GH P265GH L245GA L290GA SGP C250 C350, etc.
Certification: CE API 5L ISO9001 ISO14001 ISO45001 CNAS ,etc.
Brand: WuZhou
OEM: Accept
Payment Term: TT/LC
Delivery Time: 3-45 Days
Application: Farmland irrigation Diversion works Pump station and penstock system Farmland Drainage and Flood Control Works, etc.
The Problem with Ordinary Irrigation Pipes
Standard 12-meter pipes force an equation no farm manager wants: more joints, more welding crews, more X-ray inspection costs, and a lifetime of leak risks. Worse, many mills can form a longer pipe but cannot test or coat it in one continuous piece. They cut corners. You inherit the liability.
Then there's the standards headache: a supplier claims "international quality" but can't tell AWWA C200 from API 5L. When the project consultant demands traceable mill test reports to ISO 3183, they go silent. That won't happen with us.
Our Solution: The 30-Meter Forming, 18-Meter Full-Process Advantage
As China's largest spiral pipe group, we've invested where it matters — the entire production chain.
| Capability Dimension | Industry Routine | We Can Do |
| Steel Pipe Forming Length | 12 Meter | 30 Meter+(Single Pieces) |
| Online X-ray Flaw Detection | 12 Meter | Max. 18 meter |
| Water Pressure Test | 12 Meter | Max. 18 meter |
Pe External Corrosion Protection/Fbe Internal Corrosion Protection | 12 Meter | Max. 18 meter |
This means one thing for your irrigation project: fewer field joints, faster installation, lower lifetime risk.
A 30-meter forming capability — with full inline X-ray, hydrostatic testing, and dual-layer coating applied continuously across 18 meters — can slash field girth welds by 33–50% versus standard 12-meter pipe. Fewer welds mean fewer leak paths, fewer inspection costs, and a pipeline that gets buried before the planting window closes.
Code Compliance That Withstands Consultant Scrutiny
Irrigation projects funded by the World Bank, Asian Development Bank, or African Development Bank demand one thing: documented proof that every pipe meets the standard, not just the sample.
Our Triple-Stacked Certification Framework
| Certification/Competency | Authoritative Description Of | What It Means To You |
| API 5L (PSL 1 & PSL 2) | Global Pipeline Steel Pipe Benchmark covering Gr. B to X80 | Meet the bidding qualification threshold of all international irrigation high-pressure main lines |
| AWWA C200 | Hydraulic Steel Pipe Standard of American Water Industry Association | Mandatory Requirements for North America, Middle East and All Projects Affected by American Standards |
| ISO 3183 | ISO Line Pipe Standards, Dual Gauge Benchmarking with API 5L | Preferred references for projects in Europe, Southeast Asia and French Africa |
ISO 9001 | Quality management system certification | Basic threshold for bidding of World Bank/ADB loan project |
CE Marking | Compliance with EU Building Products Regulations | Pass to EU and CE marked areas |
CNAS Accredited Lab (ISO/IEC 17025) | China National Accreditation Service Laboratory, ILAC Mutual Recognition | Your third-party inspection agency is not required to witness in China; Our data is equally trustworthy in their eyes |
Your Mill Test Report Starts in Our CNAS Lab — Not a Third Party
Steel Pipe Body:
· API 5L/ISO 3183: Tensile test, Charpy impact, chemical composition spectrum analysis, DWTT test
· AWWA C200: Hydrostatic test, dimensional tolerance, longitudinal/transverse tension
Anti-Corrosion Coating:
· Outer coating 3PE: test according to ISO 21809-2/DIN 30670 - peel strength, cathodic disbonding, impact resistance
· Internal Coating FBE/Liquid Epoxy: Testing per AWWA C210/NACE SP0394 - Pinhole Inspection, Adhesion, Cure
When your project consultant asks for "Mill Test Report per API 5L with NACE-compliant coating data," we can call it up on the spot.
Your Project Language. Our Manufacturing DNA
For irrigation projects in different regions and from different sources of funds, the standard combinations quoted in the bidding documents are very different. We do not "make a standard, make it easy for the customer", but manufacture according to your contract.
Common bidding language for irrigation projects, we match one by one:
| Project Background | Typical Tender References | We Deliver |
| World Bank/ADB Loan (AALA) | API 5L PSL1 Gr. B+ISO 21809-2 3PE+AWWA C210 internal coating | ✔ Fully matched, CNAS report traceable |
| Middle East Owner (UAE, Saudi Arabia) | API 5L Gr.B/X42 + DIN 30670 3PE + NACE SP0394 FBE | ✔ German standard coating, full test in laboratory |
| African Government Irrigation Authority | ISO 3183 L245+ISO 9001 Manufacturer Qualification+ILAC Mutual Recognition Laboratory Report | ✔ CNAS=ILAC mutual recognition, no need to find another third party |
Europe/Eastern Europe | EN 10208 + CE Marking + EN 10217 | ✔ CE Marking Coverage, EN Standard Endorseable |
ANZ/Pacific Islands | AS 1579+AS/NZS 4020 (Water Safety) | ✔ Coordinated, material level testing capability in laboratory |
Yen Loan Project in Southeast Asia | JIS G 3452 + JIS G 3457 | ✔ Coordinate and provide JIS benchmarking test data |
In a word: you bring the terms of the contract, we have laboratory certificates, production lines can do.
One Manufacturer, Every Pipe Your Irrigation Network Needs
No more coordinating five suppliers for one project.
·Spiral Submerged Arc Welding Pipe (SSAW): bore to 3620mm, wall thickness to 25mm+
·External corrosion protection: 3PE (ISO 21809-2/DIN 30670), 3PP, coal tar enamel
·Internal corrosion protection: FBE fusion bonded epoxy (NACE SP0394), liquid epoxy (AWWA C210)
·Pipe fittings: elbows, tees, reducers and flanges - unified quality control, delivered in the same batch
Practical Rules of Steel Grade Selection for Irrigation Projects
| Project Type | Recommended Steel Grade | Reason |
| Plain low pressure irrigation (gravity flow) | API 5L Gr.B / ASTM A36 | Low head, low strength requirement and cost priority |
| Medium and high pressure pumping irrigation (200-500m head) | API 5L X42 / A572 Gr.50 | Equilibrium Strength and Economy |
| Outlet section of high lift pump station (>500m water head) | API 5L X46-X52 | Sufficient safety margin |
World Bank/Asian Development Bank Loan Project | API 5L Gr.B PSL1 | Compliance with standards, controllable cost and high acceptance rate |
Middle East/African National Irrigation Authority | API 5L Gr.B Or ISO 3183 L245 | The most common reference of bidding documents |
Irrigation Piping International Common Steel Grade Quick Look Up Table
API 5L/ISO 3183 System (preferred for global irrigation mains)
This is the most frequently used steel grade system in irrigation high-pressure trunk line bidding.
| Steel Grade | Minimum Yield Strength | Minimum Tensile Strength | Positioning in Irrigation Projects |
| API 5L Gr.B (L245) | 245 MPa | 415 MPa | The most commonly used steel grade for irrigation projects, with the highest cost performance, covers 90% of irrigation trunk demand |
| API 5L X42 (L290) | 290 MPa | 415 MPa | Outlet section of medium and high pressure irrigation pump station, long-distance water main pipe |
| API 5L X46 (L320) | 320 MPa | 435 MPa | High lift pumping system, mountain irrigation penstock |
API 5L X52 (L360) | 360 MPa | 460 MPa | Ultra-high pressure section, inter-basin water transfer irrigation |
API 5L X60-X70 | 415-485 MPa | 520-570 MPa | Minimally used for pure irrigation; Penstocks for large hydro projects are occasionally involved in |
Procurement reality: API 5L Gr. B or X42 is specified for over 90% of international irrigation steel pipe bidding, and PSL1 grade can meet most irrigation projects. More than X46 are multipurpose water conservancy projects with power generation functions.
AWWA C200 system (North America and regions affected by American standards)
The AWWA standards system uses ASTM steel grades to specify:
| Steel Grade | EQUIVALENT ASTM STEEL PLATE | Yield Strength | Irrigation Application |
| ASTM A36 | — | 250 MPa (36 ksi) | Low pressure irrigation and drainage pipeline |
| ASTM A572 Gr.50 | — | 345 MPa (50 ksi) | Most commonly used irrigation trunks in North America |
| ASTM A572 Gr.60 | — | 415 MPa (60 ksi) | High-pressure irrigation main pipe |
API 5L Gr. B replacement | AWWA C200 allows API 5L pipe to be used directly | 245 MPa | Double-standard acceptance of international project |
EN European System
| Standard No | Steel Grade | Yield Strength | Irrigation Application |
| EN 10217-5 | P235GH | 235 MPa | Low pressure irrigation and drainage |
| EN 10217-5 | P265GH | 265 MPa | Medium-pressure irrigation trunk line |
| EN 10208-1 | L245GA | 245 MPa | Equivalent API 5L Gr. B |
EN 10208-1 | L290GA | 290 MPa | Equivalent API 5L X42 |
Japanese JIS System
| Standard No | Steel Grade | Yield Strength | Irrigation Application |
| JIS G 3452 | SGP | 290 MPa | For common piping, low pressure irrigation |
| JIS G 3457 | STW290 | 290 MPa | Electric arc welding steel pipe, commonly used for irrigation |
| JIS G 3457 | STW370 | 370 MPa | Medium and high pressure irrigation |
JIS G 3457 | STW400 | 400 MPa | High-pressure irrigation main pipe |
Australian AS System
| Standard No | Steel Grade | Yield Strength | Irrigation application |
| AS 1579 | C250 | 250 MPa | Low pressure irrigation and drainage |
| AS 1579 | C350 | 350 MPa | Most commonly used for irrigation projects in Australia and Singapore |
The Water Your Pipeline Carries Will Feed a Nation. Don't Let It Start with a Compromise.
Whether it's drinking water for a growing city or irrigation for a 50,000-hectare breadbasket, the pipeline you spec today will serve for 50 years. Every millimeter of coating. Every Charpy impact value. Every X-ray film of every weld.
At China's largest spiral pipe group, we treat every meter with that weight of responsibility.
· 30-meter forming — fewer joints, fewer leaks, faster planting.
· 18-meter inline X-ray, hydro-test, and 3PE/FBE coating — no shortcuts, no blind spots.
· CNAS-accredited lab — your mill test report is a legal document, not a marketing brochure.
· API 5L, AWWA C200, CE, ISO 9001 — your project language, our manufacturing DNA.
When your pipeline is this critical, partner with the mill that builds to last.
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FAQ
What steel grade is right for my irrigation project?
If you're unsure, API 5L Gr.B PSL1 covers 90% of global irrigation applications. Share your operating pressure and water head, and our engineers will confirm or upgrade the recommendation — with CNAS lab test data to back it.
What Are The Available Steel Grades For Irrigation Projects?
API 5L Gr.B to X80, AWWA C200 / ASTM A572 Gr.50, ISO 3183 L245-L555, EN 10208 L245GA-L290GA, etc.
How can I verify your 18-meter testing and coating is real?
The authenticity of this advantage can be demonstrated by making an on-site inspection and remote video connection at any time and anywhere.
Our specs require API 5L PSL2 + AWWA C210 lining + DIN 30670 3PE. Can you do all three in one order?
Yes. We form to API 5L PSL2, coat externally per DIN 30670, line internally per AWWA C210 — then our CNAS lab verifies all three on one consolidated MTR. One supplier, no finger-pointing.
Our irrigation source has high silt content and fertilizer residuals. Will your FBE lining hold up over decades, or will we lose pumping efficiency?
CNAS lab conducts surface roughness profiling, adhesion pull-off tests, and cathodic disbondment evaluation — ensuring the liner stays bonded and smooth.
What is an irrigation pipe?
The irrigation pipeline is mainly a kind of pipeline used for farmland watering and water delivery.
What are the 4 types of irrigation systems?
Surface, Sprinkler, Drip and Subsurface.
How do irrigation pipes work?
Irrigation systems typically consist of three main components: a water source, a pump, and irrigation pipes and fittings. The pump uses electricity to draw water from the source and feed it into the irrigation system, while the pipes transport the water to designated farm fields or areas requiring irrigation.