30+ years manufacturing EN124 D400 heavy-duty composite manhole covers for petrol stations, highways, and industrial sites.
Trusted by PetroChina & Sinopec — exported to 40+ countries.
All covers are manufactured using our proprietary SMC formula. EN124 load classes A15–E600, custom sizes available.
Complete D400 range for petroleum retail forecourts. 900x900mm Square covers, 900mm Round covers, 900mm DIP with inspection port covers, 1040mm Round Covers, 350mm Round Covers. PetroChina & Sinopec approved.
Composite covers for highways, main carriageways, and urban infrastructure. Multiple load classes A15–E600. Anti-theft by design. EN124, AS3996, AASHTO certified.
Need logos and colours? We do that. But we are not only a branding supplier — we are an SMC custom product and technical solution provider. Non-standard dimensions, complex structural requirements, load-bearing specifications other suppliers cannot meet: bring us your requirement and we will design, engineer, and deliver it.
We supply composite manhole covers to project buyers across three core sectors. Each has different technical requirements — our range covers all of them.
Most composite cover suppliers are trading companies. We are the manufacturer with our own SMC materials production line and max 2000tons high temperature pressing machine—this affects quality, durability, price, and lead time.
We produce our own SMC sheet material in-house using imported eco-friendly raw materials. This gives us full control over formula, quality consistency, and competitive pricing — unlike suppliers who buy SMC from third parties.
We have been an approved composite cover supplier for PetroChina and Sinopec — China's two largest state oil companies — for many years. This isn't marketing language; it's a verifiable procurement qualification we can document.
We operate a 2000-ton press, a 1500-ton press, two 1000-ton presses, and a full range of smaller tonnage presses, enabling us to manufacture large-format and high-load SMC covers with precision and efficiency.
Custom logos, colors, opening configurations, load ratings, and sizes — all produced from our own tooling. Our engineering team handles design-to-production for OEM requirements from major oil companies and EPC contractors.
We enjoy exceptional loyalty from both our clients and employees. We maintain long-standing partnerships with clients of over 10 years, while our skilled workforce includes seasoned operators with 30+ years of hands-on experience in SMC composite manufacturing.
Our products are certified to EN124 (Europe), AS3996 (Australia), and AASHTO (North America). We can provide third-party test reports from SGS and national laboratories. One supplier, global compliance.
Tell us your project specifications and we'll respond within 24 hours with pricing, lead time, and available certifications.
For urgent enquiries, contact us directly:
✓ Response within 24 hours
✓ Free sample available for qualified buyers
✓ OEM / custom specifications welcome
✓ Lead time 15–25 days standard orders
M&C Composite Covers — EN124 D400 · PetroChina & Sinopec Approved Supplier
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