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With over 40 years of expertise in the foundry and precision machining industry, Sino Industry and Trade Co., Ltd. (SITC) is a leading manufacturer of drawings-based grey iron casting fabrication solutions for industrial manufacturers and enterprise equipment producers worldwide. Our grey iron sand casting services deliver high-strength, wear-resistant cast components tailored to your unique technical requirements, with full support for custom design, mass production, and end-to-end finishing. We specialize in OEM grey iron casting parts compliant with ASTM, DIN, BS, and GB global standards, serving as a trusted long-term partner for bulk procurement clients across multiple industrial sectors.
Our end-to-end workflow for custom grey iron castings covers precision mold making, clay wet sand casting, resin sand core forming, 3/4/5-axis CNC machining, multi-type surface treatment, strict inspection, and export-standard packaging. We support casting blank weights from 0.01kg to 3000kg and dimensions from 2mm to 1500mm, fully customizable to your specifications.
We strictly implement ISO9001:2015 and IATF16949 quality management systems across all production links. Our mature management system ensures consistent batch quality, with full traceability for every batch of industrial grey iron castings, from raw material incoming to finished product delivery.
Our multi-stage quality control system eliminates defects and ensures compliance with your tolerance requirements. We conduct incoming raw material spectral inspection to verify grey iron material grade, followed by 100% in-process inspection (IPQC) during mass production. Equipped with Zeiss CMM and advanced testing instruments, we guarantee casting tolerances of CT5-CT8 and machining tolerances as tight as 0.01mm. Before shipment, we perform final full inspection (FQC) and outgoing quality control (OQC), with complete material test reports provided for every batch.
We offer full OEM & ODM support for CNC machined grey iron components, accepting custom orders via 2D/3D drawings, physical samples, or initial design concepts. Our engineering team supports all mainstream design formats including Auto CAD, Solid Works, STEP, and IGS, and provides design optimization to reduce production costs while improving component performance. We can cast your brand logo, part number, and technical specifications directly onto component surfaces for full customization.
We are an ISO and IATF certified in-house foundry and machining manufacturer with 40+ years of experience, offering direct factory pricing and one-stop services for industrial clients.
For custom grey iron casting parts, mass production lead time is 30-45 days after deposit confirmation, with sample production available upon request.
Yes, our engineering team can develop tailored designs based on your application requirements, sample parts, or conceptual ideas.
Why Choose SITC for Your Automotive Forging Parts Needs
SITC is a professional forging manufacturer with a wholly-owned production factory, 40+ years of industry experience, and 800+ skilled workers. We guarantee on-time delivery via our 1.5-hour proximity to Qingdao Port, a 12-18 month product warranty, and 24-hour after-sales response. We provide end-to-end one-stop service, delivering optimal forging solutions for global commercial clients.
Our custom metal casting and machining services support a diverse range of industries worldwide, including automotive, commercial vehicles, agricultural machinery, construction and mining equipment, railway transportation, marine engineering, energy and power generation, oil & gas, industrial machinery, medical equipment, aviation, and defense applications.
Each finished product is assigned a unique identification number and recorded together with the raw material batch number and production code to ensure full traceability in the event of any quality issue or dispute.
Designated Supplier of Custom Metal Components for Leading Global Truck Brands.
Delivering true one-stop service and optimal solution.
With extensive manufacturing experience, we produce high-quality customized metal components according to customer drawings, samples, or technical specifications.
Large castings for heavy-duty truck, train/locomotive/subway/metro/railway/farm/agricultural/forestry/construction/building/mining/wind turbine machinery components, industrial/engineering/energy/power plant equipment, marine/shipbuilding/petroleum/petrochemical/Oil Drilling/metallurgy machinery.
We can manufacture various castings with high-precision CNC machining according to customers' drawings, samples, specifications, or technical requirements.
Casting weight range: 0.1 kg–3000 kg.
A leading company in the precision casting industry, supported by a senior engineering team with specialized expertise and extensive experience. We excel at handling special materials, complex structures, defect control, and advanced processing, enabling us to meet evolving customer needs and deliver optimal, one-stop solutions to clients worldwide.
World-class manufacturing facilities certified to ISO 14001, IATF 16949, and ISO 9001.
All raw materials are sampled and tested in our inspection laboratory upon arrival at the factory. Only qualified materials are allowed to enter our warehouse.
The factory covers an area of more than 90,000 square meters and is equipped with raw material warehouses, inspection laboratories, shell molding workshops, casting workshops, pretreatment workshops (including sandblasting, shot blasting, and polishing), CNC machining centers, electrophoresis workshops, testing laboratories, non-conforming product warehouses, semi-finished product warehouses, packaging workshops, and finished product warehouses.
Benefiting from a strategic geographical location, our factory is only a one-and-a-half-hour drive from Qingdao Port, the nearest shipping port. This advantage enables highly efficient logistics operations and ensures smooth and on-time delivery to customers worldwide.
Based in China, serving customers worldwide, we are committed to delivering greater value to global clients.
As an ISO 9001 and IATF 16949-certified OEM/ODM manufacturing partner, we provide comprehensive one-stop services and end-to-end solutions for global customers. From the early stage of product development, we work closely with customers to optimize structural components through casting solutions, helping improve product design, reduce costs, and maximize customer value.
With strong technical expertise,a robust production management system, advanced production equipment, a strict and effective quality control system, and state-of-the-art inspection instruments and methods, we consistently deliver high-quality products to customers worldwide.
Our factory is equipped with complete production lines, and the entire production chain — from raw materials to finished products — is fully under our control. This enables us to consistently deliver high-quality products at competitive prices, along with excellent service worldwide.
Each of our products is a work of art.
One of the leading suppliers of hardware customization services for commercial vehicle manufacturers worldwide.
We leverage our first-mover advantage to drive the global transition to a low-carbon economy.
One of the most advanced CNC machining centers, featuring dozens of state-of-the-art 3-axis, 4-axis, and 5-axis CNC machines.
State-of-the-art equipment significantly improves production efficiency and product quality, ensuring that all quality standards are met.
A leading OEM manufacturer of precision machinery parts for the foundry industry, specializing in design, R&D, and production for over 40 years, supported by 60 experienced engineers and 800 skilled workers.
Equipped with over 30 types and more than 400 sets of advanced machinery, we specialize in casting, forging, stamping, machining, drilling, grinding, molding, and surface treatment processes.
We have dedicated technical and R&D departments to provide comprehensive solutions for manufacturing and production-related challenges.
Our R&D department uses advanced design and simulation software, including AutoCAD, SolidWorks, UG, Pro/ENGINEER, CAXA, Rhino, Arena, and DEFORM, during the new product development process.
Every batch, from raw materials to finished products, undergoes laboratory testing to ensure compliance with contractual quality requirements.
Each batch of finished products undergoes spectral inspection. Tensile testing is conducted on specific products to ensure compliance with required strength standards.
We specialize in OEM custom casting and forging solutions for automotive, heavy equipment, railway, marine, energy, aerospace, defense, medical, and industrial applications.
We have been strengthening and expanding our competitive advantage to stay ahead of the competition, delivering products and services beyond expectations.
We are familiar with a wide range of international industrial standards, including Chinese GB, ASTM, AISI, DIN, NF, JIS, BS, AS, and AAR standards.
As most of our products are exported to European and North American markets, we have extensive experience with international technical specifications and quality requirements.
Guided by the philosophy of putting customer needs first and customer satisfaction foremost, we focus on understanding customer requirements and exceeding expectations. Agile and responsive, we continuously meet the evolving needs of customers worldwide by delivering optimal solutions.
Advanced testing equipment, a strict quality control system, and effective inspection methods enable us to consistently provide high-quality products to customers worldwide.
In 2025, we supplied over 110,000 tons of products, providing our clients with reliable supply capacity and consistent on-time delivery.
OUR MISSION: Committed to delivering quality products, competitive pricing, and outstanding customer service worldwide.
Wide Application
Our products and customization service cover a wide range of industries, including Auto/automobile/automotive, car, truck/lorry, commercial vehicle, forklift/lifting/hoist equipment, combine harvester, farm/agricultural machinery, mining machinry, engineering machinery, construction/building machinery/vehicle(crane/hoist, excavator, bulldozer, dump/dumper/self-dumping/self-discharging truck, concret/cement mixer truck, pump truck, crusher...), petroleum/ petrochemical/oil drilling/metallurgical machinery, shipbuilding machinery, locomotive, bullet train, high-speed railway, underground/subway/metro, tractor, trailer, industrial equipment, marine/ship machinery(Turbine, propeller...), defense//military/ordnance equipment(Tank, armoured troop carrier, amphibious equipment...), power plant, wind power generator/tower, wind turbine, lift/elevator/escalator, medical equipment, food machinery, aviation equipment/instrumentation, pump, valve, gearbox, motor/engine, motorcycle, Lathe machine tools, …etc.
Explore more product applications on our Applications page.
Core Advantages
Our OEM automotive steel forgings deliver ultra-high dimensional accuracy, uniform material structure, and superior wear resistance, outperforming traditional cast parts in heavy-load automotive systems. Our integrated production chain ensures stable batch quality, while our source manufacturing capacity delivers a 5% to 10% cost advantage over intermediate traders for bulk orders.
Certifications