Ningde Linjingxingke International Trade Co., Ltd.
Custom Pump Parts Manufacturer for OEM Projects
As a build-to-print sand-casting foundry for pump components, we cast and machine pump casings, brackets, bearing housings, seal glands and impellers on a patented twin vertical-line process — a reliable partner for long-term OEM projects.
Ningde Linjingxingke International Trade Co., Ltd.
Impellers, Casings and Wear Parts Built to Your Drawing
Send a 2D drawing, a STEP file, a nameplate photo or the worn part itself. We confirm the interfaces that must fit, settle the pattern and the machining quantity, and come back with a firm quotation.
About LINJINGXINGKE
Pump Component Manufacturing Expert
Ningde Linjingxingke International Trade Co., Ltd., a sand-casting foundry for pump components, produces pump casings and volutes, bearing housings and brackets, seal glands and covers and impellers for centrifugal, jet and process pumps. Every part leaves the shop against a customer drawing, a 3D file or a worn sample — we publish no catalogue of standard products, because we do not sell pumps.
Most enquiries arrive as an eroded casting, a smudged print or nothing but a nameplate photograph. Working backwards from that is the normal case here, not an exception.
Twin vertical-line sand moulding, CNC turning and milling, heat treatment, dynamic balancing and inspection all sit under one roof, so nobody has to coordinate three suppliers to get one impeller. One moulding route, run properly, is what keeps the hundredth casting the same as the first.
Grey iron, ductile iron, WCB carbon steel and CF8M stainless cover most of what we pour; other grades are confirmed against your drawing before quoting. Every part ships with a material certificate and a dimensional report.
Strict Quality Control
Delivered On Time
Competitive Price
Provide stable, reliable and competitive comprehensive manufacturing advantages for long-term OEM pump component projects.
Years of foundry experience
Foundry floor area
Annual casting output
Employees
Product Series
Pump Casings
Jet, square, long-head and short-head casings.
Impellers
Semi-open, closed, vortex and slurry impellers.
Seal Glands & Covers
Seal glands, gland covers, bearing covers.
Why Choose LINJINGXINGKE for Pump Component Projects
Replacement parts fail for boring reasons — a bore 0.2 mm loose, a mirrored impeller, a hub height that shifts the running clearance. We settle those interfaces before quoting, and we write down every dimension we had to assume.
- Interface-first review: shaft fit, keyway, hub height, bolt pattern, register diameters
- Sand moulding on a patented twin vertical-line system — one route, run properly
- Dynamic balancing of rotating parts to the grade agreed on the order
- Material certificate, dimensional report and balance report with every shipment
Twin Vertical Lines
Nationally patented sand-moulding process, in daily production.
15,000 m²
Foundry floor covering pattern, moulding, melting, machining and inspection.
ISO 1940
Every rotating part balanced and reported before despatch.
EN 10204 3.1
Material certificate issued per heat, with every shipment.
Our Pump Component Process:
From Pattern to Finished Part
Tooling & Pattern
Pattern and core box developed in-house from your drawing, a 3D file or a sample part.
Twin Vertical-Line Moulding
Sand moulding on a patented twin vertical-line system — the process the plant is built around.
Melting & Pouring
Charge to the specified grade with spectrometer verification on every heat.
Shakeout & Fettling
Knock-out, gate removal, shot blasting and grinding to a clean casting.
Machining
Mating faces, bores, seal seats and bolt patterns machined to the drawing.
Inspection
Dimensional check, material certificate and the agreed NDT before release.
Quality Certifications for Pump Component Manufacturing
What ships with every batch. Certificate scans are added here once they are issued.
Clients & Partners
Trusted Component Partner for
Pump OEMs and Aftermarket Distributors
We work with manufacturers and distributors who value predictable lead times and parts that fit the first time — because the second visit to a pumping station costs more than the casting did.
Latest Insights on Pump Components & Materials
What Is a Pump Impeller?
The single component that converts shaft power into fluid energy — geometry, types and why the trailing edge matters.
Read more ›Closed vs Semi-Open Impellers: How to Choose
Efficiency, solids handling and clearance maintenance — the three trade-offs that decide the design.
CF8M or CD4MCu? Selecting Alloys for Pump Wet Ends
Chloride content, abrasion and cost drive alloy choice more than the pumped medium's name.
Why a Casting Fits or Does Not: The Interfaces That Decide
Flange face, bolt circle, spigot register and bore — the four dimensions that make a replacement casting drop in or go back in the crate.
Request a Quote
Tell us what you need — send a 2D drawing, a STEP file, a nameplate photo or a picture of the worn part, and our engineering team will come back with a firm quotation once we have confirmed the interfaces that must fit.
-
Email
-
Phone / WhatsApp
+852 5528 8095 -
Location
Building No.1, No.2 Industrial Park Road, Lidun Village, Lidun Town, Zhouning County, Ningde City, Fujian Province, China 355402
Send Your Enquiry
Tell us the pump and the part. We reply with questions or a quotation, not an autoresponder.