Mid-frequency bending capability
Manufacturing covers large-diameter bends, formed fittings, machining and heat treatment for project supply.
Since 1982 · Pressure piping components manufacturerReply in 4 h+86 132 9342 5333haihaojituan@163.com
About Haihao
Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd. has manufactured high-pressure pipe fittings and flanges since 1982. Our 580,000 m² facility in Mengcun County, Cangzhou serves international EPC contractors, refineries, LNG terminals, power plants and chemical processing plants — backed by 660 staff including 26 engineers, ISO 9001 + ABS Type Approval, and 100,000 t/yr capacity across 20 production lines.
Capability highlights
Factory tour 2024
Snapshots from this year's factory walk-through — production hall, heat treatment, CNC, vessel shipping and our safety culture. Not stock images.
Factory capability
Annual capacity 100,000 tons; max bend Φ2200 mm, formed fitting DN1500, single forging up to 50 t
Manufacturing covers large-diameter bends, formed fittings, machining and heat treatment for project supply.
Testing for pressure piping components and project supply quality control.
Processes
Inspection capability
Representative customers and projects
Qualifications listed in profile
Corporate culture
Strict control over every link of production — raw material, process, design, manufacturing and inspection — to ensure outstanding product quality.
Grasp the pulse of the era. Understand the customer. Pioneer innovation.
Technology and innovation. Continuous learning, perseverance, and progressive ambition — challenge ourselves, transcend the past, and climb toward higher goals.
Milestones
Since 1982, Haihao Group has grown over 40+ years into an industry leader with the China Famous Trademark distinction, exporting to 20+ countries and regions.
Started with two lathes and one drilling machine purchased for just over 1,000 RMB — the seed of Haihao Group.
Mengcun High-Pressure Flange Factory established — operations enter a standardized phase.
New facility built along the Xinda highway in Mengcun. Office building and workshops completed, modern equipment introduced.
Recognized as a designated cooperation factory by the Ministry of Chemical Industry and the Ministry of Electric Power.
Compliance Matrix
EPC AVL committees ask for a single matrix instead of a stack of certificate JPGs. Below is our position against the certifications most often required for power, oil & gas, petrochemical and EU pressure equipment work.
| Requirement | Status | Notes |
|---|---|---|
| ISO 9001 | Held | Certified, current. CN + EN copies on certificates page. |
| ISO 14001 | Held | Environmental management certified. |
| ISO 45001 | Held | OH&S certified. |
| Requirement | Status |
|---|
Heat-number traceability
Every fitting, flange or forged item leaves the plant with a heat stamp that links back to its mother MTC, finished MTC, NDT report, heat-treatment chart, TPI sign-off, and stenciled crate. A redacted sample dossier is shared on AVL request.
Mother MTC (EN 10204 3.1) recorded against incoming heat number; bar / billet stamped before cutting.
Item-level MTC issued post-machining: chemistry, mechanicals, hardness, hydro / impact where applicable.
PMI / UT / MT / PT in-house. RT and HIC (NACE TM0284) per buyer ITP. Reports cross-linked to heat number.
Automatic time-temperature recorder; charts retained 5 years and supplied with shipping documents.
NACE / Sour service
Saying "NACE capable" is not the same as proving it. Below is the list of standards we manufacture against, what we test on every order, and where we draw the line — so the EPC reviewer can decide before opening an inquiry.
Honors & certifications
Spanning licenses, ISO management systems, marine-class society approvals, central state-owned enterprise supplier qualifications, brand recognition, and utility patents. Click any certificate to enlarge.
Inspection includes chemical analysis, metallographic inspection, physical tests and NDT.
The road is winding and arduous; conviction is enduring and fearless. Every honor we have earned is both a milestone and a new starting line — we will keep pressing forward to open up new horizons.
Hebei Haihao High-Pressure Flange & Pipe Fittings Group Co., Ltd. formed; product line diversified.
"Haihao" recognized as a Famous Brand of Hebei Province and a Hebei Renowned Trademark.
Mengcun named the 'Pipe Fittings & Elbows Capital of China' by the China Hardware Products Association.
"Haihao" recognized as a China Famous Trademark by SAIC — the first in our industry to receive this distinction.
Y10-6000 forging hydraulic press commissioned — filling a capability gap for large-scale forgings in Hebei.
| Notes |
|---|
| PED 2014/68/EU | Held | CE marking under PED held; AD 2000 W0 material documents supplied per order. |
| AD 2000 W0 | On request / partial | Material qualification documents available per project; full plant approval issued case-by-case via TÜV. |
| China TS Special Equipment | Held | Manufacturing permit for pressure pipe components. |
| Requirement | Status | Notes |
|---|---|---|
| ABS Type Approval | Held | Pipe fittings & flanges; held since 2008. |
| BV (Bureau Veritas) | Held | Type approval certificate held. |
| DNV / LR | On request / partial | Witness inspection accepted on order; full type approval not currently registered. |
| Requirement | Status | Notes |
|---|---|---|
| NACE MR0175 / ISO 15156 | On request / partial | Manufactured to spec on request: hardness mapping ≤ 248 HV, controlled S/P. HIC (TM0284) per buyer. |
| API 6A wellhead/X-mas | Out of scope | Not within current product scope. |
| NORSOK M-650 (Material qualification) | On request / partial | Duplex / 6Mo / Inconel material qualification handled per project; not a permanent certification. |
| Requirement | Status | Notes |
|---|---|---|
| ASME B16.9 / B16.5 / B16.47 / B16.11 | Held | Routine production scope for fittings & flanges. |
| EN 10253-2 / EN 1092-1 | Held | EU-bound shipments use EN dimensional and material standards. |
| MSS-SP-75 (WPHY high-yield) | Held | WPHY-52/60/65/70 fittings supplied to gas pipeline projects. |
| JIS B2220 / B2311 / GB/T 9119 | Held | Used for Japan/Korea and PRC domestic projects. |
| Requirement | Status | Notes |
|---|---|---|
| EN 10204 3.1 MTC | Held | Standard for every order; in-house lab validated. |
| EN 10204 3.2 MTC | Held | Issued under TPI witness (SGS / BV / TÜV / DNV / Lloyd's / Intertek / ABS). |
| Stage inspection by buyer / EPC QA | Held | Buyer or EPC QA may witness any hold/witness point at our plant. |
Document samples available under NDA at RFQ stage.
Buyer or third-party (SGS / BV / TÜV / DNV / Lloyd's / Intertek / ABS) signs off hold/witness points; 3.2 MTC issued.
Heat number stenciled on each crate; certificate dossier sealed with shipment for site receipt sign-off.
Redacted sample dossier on AVL request
High & New Technology Enterprise
