Overview
Ningbo Suijin Machinery Technology Co.,Ltd is located in Ningbo city ,Zhejiang Province, We specialized in manufacturing all kinds of investment castings and machining parts, material including carbon steel, alloy steel, and stainless steel, we also compound the material according to drawing specification.
We also equipped advanced quality control lab center to keep the good quality, our inspection equipment includes Spectrometer, Metallographic Microscope, Tension Tester, Low Temperature Impact tester, X-ray tester, magnetic particle detector, UT, CMM and so on. and we will continue to invest and update our testing equipment to meet the market demand.
Our company has more than 200 employees, including 17 engineers and 15 QC. every year some of employees will out training to improve their knowledges and skills.
We had got ISO 9001/IATF16949 and PED certifications.

As a manufacturer, we can provide OEM and ODM service, our product range cover automotive, boats, Oil machinery, agricultural machinery, building equipment, valves, pumps, electrical machinery, hardware, transmission, etc. more than 60% are exported to overseas.

Investment casting is one of the most sophisticated casting processes, enabling intricate shapes while still maintaining high dimensional accuracy and high surface quality.
And CNC machining process allows for converting unique designs into exact shapes through multiple dimensions, which can provide the service of one-stop solutions which can be satisfying application requirements in diverse end-markets.

SJ-Machinery uses high-quality processing equipment to satisfy the needs of customers around the world, such as Tooling design, wax pattern injection, wax pattern assembly, shell-making, pouring, heat treatment, and CNC Machining are all performed using the best available machinery, and also equipped advanced inspection equipment to ensure the part quality.

We process a wide variety of materials ranging from carbon steel, alloy steel, stainless steel, aluminum alloys according to industry and custom specifications,SJ-Machinery is capable of meeting material specifications according to ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB standards. We cast more than 100 different ferrous and nonferrous alloys.

SJ-Machinery investment casting capabilities cover both ferrous and nonferrous metals. We produce high precision and geometrically complex investment castings and machining parts ranging from 8g-10KG. and up to 300mm diameter or length, utilizing both air and vacuum melting and pouring technologies.

3D printing technology is the perfect cost-effective and efficient solution for rapid prototyping and small production runs. At SJ-Machinery, we use 3D printing to develop complex investment castings that require design alterations or are under a tight deadline.

SJ-Machinery takes pride in providing our high-quality products and services, reasonable costs, and timely delivery of all our products. We hold quality certifications according to ISO 9001, ISO/IATF 16949, which is the barriers to entry the auto industries.

Currently our part surface treatment demand including process capabilities which are supplied to OEM customers and system integrators for diverse end-markets. include Chrome, Nickel, Zink-Nickel, Zinc, Dacromet, Zinc-iron, Electroless Nickel plating, Anodizing, Passivation, powder coating and Electro-polishing, mirror polishing, for products made of carbon steel, stainless steel, Duplex stainless steel, aluminum alloy, and super alloys.

SJ-Machinery manufactures investment castings and CNC machinings for diverse end markets. Typical products include high-pressure common rail parts, sensor boss, nozzle rings, inlet/outlet cone, and EGR components for automotive applications, manifolds, housings, brackets for industrial equipment applications…