Our Services
From your first process inquiry to years of production — engineering design, quality-managed manufacturing, spare parts, training, and on-site support. One team, every step of the way.
A reactor doesn't arrive at your site and disappear into operation. It needs a design that matches your process, manufacturing that meets your quality standards, documentation your auditors will accept, spare parts when something wears out, and people who can troubleshoot at 2 AM your time. We cover all of it — not through partners, but through our own team.
Service Lines
We review your process conditions before we cut steel. Material selection check. Heat transfer area calculation. Agitator type recommendation. Sealing solution evaluation. Nozzle layout optimization. We flag issues you may not have considered — and you decide what to change.
Quality is designed in, not inspected in. Every batch of steel plate is verified. Every weld has a qualified procedure and a qualified welder. Every NDT report is traceable. Every reactor is hydrostatic tested before it leaves the yard.
When your reactor is running, we're still here. Spare parts with same-day shipping from our warehouse. Technical questions answered within 24 hours. Troubleshooting guidance for common issues. A reactor that keeps running is the only metric that matters.
A well-trained operator catches problems before they become failures. We provide operation manuals, maintenance guides, and hands-on training — either at our facility or on-site at your plant. Your team should know how the reactor works, not just how to turn it on.
For complex installations, turnkey systems, or commissioning support — we send an engineer to your site. Installation supervision, piping connection guidance, first-batch commissioning, and trouble shooting. You know exactly what to expect before they arrive.
Not every project fits a standard design. We handle custom reactors, modified equipment, scale-up from pilot to production, and complete process skid packages. If it involves a pressure vessel and a reaction, we can engineer it.
Why ZW
One team handles design, manufacturing, documentation, shipping, and after-sales. No handoffs between vendors. No blame games when something goes wrong.
Technical questions, spare part requests, troubleshooting — we respond within 24 hours. Not "we'll get back to you next week." Downtime costs money.
We review your process conditions before quoting. Wrong material? Insufficient cooling? Awkward nozzle placement? We tell you before you pay — so you can fix it on paper, not on site.
Common spare parts — mechanical seals, agitator components, gauge glass, thermowells — are kept in our Weihai warehouse. Same-day shipping to most destinations.
How It Works
You send your process conditions. We review them — material, heat transfer, agitation, sealing, nozzle layout. We flag issues and recommend improvements. You approve the design or request changes. No cost for the review.
Formal quotation with itemized pricing. Technical specification document. Delivery timeline confirmed. Payment terms agreed. Everything in writing — no surprises later.
Material incoming inspection. Welding procedure qualification. Process control at every stage. NDT as required. Hydrostatic test. Polishing. Final inspection. You can visit or request third-party inspection (SGS, BV, TÜV).
Complete documentation package: MTRs, NDT reports, pressure test certificates, nameplate data, conformity certificate, packing list. Sea-worthy packaging. Proper lashing. We track until it arrives at your port.
Detailed installation drawings and video guidance. On-site engineering support available for complex projects. First-batch commissioning assistance. Operator training provided.
Spare parts available. Technical support within 24 hours. Annual maintenance recommendations. Modification support. A reactor running well for years is our goal — and our best reference.
FAQ
No. Many of our customers never visit — they review our certifications, request third-party inspection during manufacturing, and verify documentation upon delivery. But if you'd like to visit, we welcome you. You'll see the manufacturing process, meet the team, and see reactors being built for your industry.
Within 24 hours, usually much faster. Our after-sales team (zwfw@whzhengweihj.com) handles all post-sale technical inquiries. For urgent issues, WhatsApp or WeChat messages get a response the same day.
Yes. For installation supervision, commissioning support, or troubleshooting, we can send a qualified engineer to your location. Travel and accommodation costs are quoted upfront — no hidden fees. This is common for turnkey projects and complex systems.
Common consumables: mechanical seals (various sizes), agitator components (impellers, shaft seals), gauge glass assemblies, thermowell elements, safety valve replacements, gasket sets. Full spare parts list is provided with every order. Additional parts can be ordered within 2–4 weeks.
Yes. We provide operation manuals, maintenance guides, and hands-on training. Training can be conducted at our facility in Weihai or on-site at your plant. Materials are provided in English or your preferred language.
Modifications are common — different product, different medium, expanded capacity. We engineer the modification, manufacture the parts, and provide installation guidance. Every modification is documented so your reactor records stay current.
Whether it's a design review before you commit, spare parts for an existing reactor, or on-site commissioning — we're here. Tell us what you need.