MA Certification Explained: Coal Mine Plastic-Coated Pipe Requirements
September 15, 2026
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What the coal-mine MA mark covers and why buyers in mining projects ask for it.
DIRECT INDUSTRIAL MANUFACTURER & GLOBAL PIPELINE EXPORTER
Heavy-Duty Spiral Welded Pipes & High-Abrasion Rubber Lined Piping Systems
Cangzhou Youcheng Pipe Technology Co., Ltd. delivers large-diameter SSAW/HSAW steel pipes (DN200–DN3000) and precision hot-vulcanized elastomer lined pipe spools. Certified to API 5L, EN 10224, AWWA C200, and ISO standards with 100,000+ tons annual capacity.
100,000+ Tons
Annual Output Capacity
DN200 - DN3000
Outer Diameter Range (Up to 120")
Up to L555M / X80
Highest Steel Grade Capability
Tianjin Port Hub
Fast Bulk Vessel & Container Shipping
Featured Products
Proven Project Track Record
Trusted by world-tier engineering contractors including China Minmetals (MCC), Sinohydro, and European industrial clients.
MCC Saindak Copper-Gold Project (Pakistan)
Scope: Over 38,000 meters of DN600 anti-corrosion spiral welded pipe with internal cement mortar lining and external coal tar epoxy.
Logistics: 325 truckloads delivered to Tianjin Port within 2 months; dispatched executive engineering specialists to Pakistan for 40-day on-site support.
European Water Project Export (Italy)
Standard: EN 10224 S235JR certified pipe spools with D610 and D813 diameters, fixed lengths of 11.8 meters for containerized shipping.
Coating: External PE + internal EP plastic lining with spherical spigot-and-socket welded joints, verified by third-party European inspection.
Mega Water Transfer Project (Sinohydro)
Scope: DN1600 to DN2000 super large-diameter internal and external epoxy-coated spiral pipes for state-level water diversion networks.
Quality Assurance: 100% online ultrasonic & X-ray radiographic inspection and complete hydrostatic proof-testing per joint.
News
Spiral SAW vs Seamless Pipe: When Does Welding Method Matter?
September 15, 2026
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Diameter, wall thickness and service pressure decide the choice. Here is the rule of thumb.
How to Choose the Right Anti-Corrosion Coating for Buried Pipelines
September 15, 2026
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A quick guide to 3PE, TPEP, FBE and epoxy coal tar systems and where each one performs.
GB/T 9711 vs API 5L: what the two standards ask for
September 15, 2026
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Two standards cover the same pipe and buyers constantly confuse them. Here is how to read the difference without a
3PE vs TPEP: which external coating does your buried pipeline actually need?
September 15, 2026
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Every week a new RFQ lands in our inbox specifying “3PE coating” — and half the time the service condition
Malesuada Aenean Sodales
September 3, 2025
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Request a Project Quotation
Our technical engineering team responds to all custom RFQs within 12 hours. Provide your desired OD, wall thickness, steel grade, coating requirements, or send project drawings directly.
Factory Address: Puwucheng Industrial Park, Yanshan County, Cangzhou City, Hebei Province, China
Official Inquiry Email: sean@youchengpipe.com
Phone / WhatsApp: +86 157 2030 1466