Corrosion Resistant Welded Parts for Marine Hardware Fittings

• Customization: Available
• Standard: GB, EN, China GB Code, JIS Code
• Surface Treatment: Stainless Steel Sandblasting/Powder/Painting
• Model NO.: Welding Service
• Energy Source: Electric Arc
• Material: Stainless Steel
• Type: Fusion Welding
• Non-Destructive Testing: Vt/Mt/PT/Ut
• Main Material: S235/S275/S355/SS304/SS316
• Working Temp: -30℃~450℃
• Welding Method: Manual Welding/Automatic Welding
• Core Feature: Reinforced Anti-Deformation
• Execution Standard: ISO 13920, ISO 9001, ISO14001
• Service Support: OEM & ODM Customized
• Warranty Period: 1 Year
• Welding Equipment: TIG Welding Machine/MIG Welding Machine/DC Submerg
• Application: Metallurgical,Rail Transit,Paper-Making,Automotive
• Welding Process: MIG, TIG, Submerged Arc Welding, Laser Welding
• Technics: OEM, as Your Design
• Item: Machining Part
• Dimensions: Machining
• Service: Customization
• Transport Package: Customized
• Specification: Customized
• Trademark: SHIEHWA
• Origin: Shandong, China
• HS Code: 843050100
• Production Capacity: 5000 Sets/Year
• Package Size: 6000.00cm * 2500.00cm * 1000.00cm
• Package Gross Weight: 15000.000kg

Product Description

Surface Treatment Services

ShiHua provides customized professional surface finishing processing for industrial metal fabricated assemblies. We treat thick cast parts, thin stamped sheets, irregular formed workpieces and complex welded structures manufactured from carbon steel, duplex stainless steel, aluminum alloy and electro galvanized steel. We integrate automated spraying production lines with meticulous manual fine finishing to satisfy mass batch orders and small sample trial customization for special engineering projects.

Our available surface treatment processes include sandblasting, powder coating, spray painting and passivation. Post treatment operations such as surface polishing, deburring, oil stain removal and sealing pretreatment deliver uniform compact coatings with stable anti corrosion capacity and long lasting outdoor working performance.

Strict full process quality control covers the whole production via coating thickness testing, salt spray resistance inspection and adhesion strength detection. Production proceeds strictly following client drawings, provided samples and industry specifications. We provide one stop supporting services including follow up precision trimming, protective film pasting and finished product packaging.

Our surface treated components are widely used in logistics storage equipment, construction machinery, environmental protection facilities and industrial ventilation pipeline systems.

Custom Vibration Stress Relief Treatment

Coating Thickness Verification Service

Our experienced operators carry out standardized vibration stress relief procedures for welded frames and sheet metal assemblies. Periodic mechanical oscillation disperses concentrated internal stress generated during cutting and welding to stabilize internal metal grain distribution. The adjusted microstructure improves material toughness and lowers long term cracking risks under variable working loads. Technicians adjust vibration frequency and processing duration according to material thickness to ensure consistent structural stability across bulk batches.

CNC Plasma Cutting and Profiling Processing
We provide customized plasma cutting services for metal plates and profile stocks including irregular outline cutting and reserved hole machining. Stable high temperature cutting flow reduces burr residues on workpiece edges. Quality inspectors check dimensional tolerance and section flatness for every batch of products. Neat formed outlines simplify subsequent assembly work and promote matching precision between separate components under actual operation conditions.

Our quality control team selects matched detection methods according to client application scenarios and industry standards. We adopt professional thickness gauges to test finished coating layers on carbon steel, duplex stainless steel and aluminum alloy workpieces with complete inspection records. Multiple sampling positions are arranged to evaluate overall coating uniformity. Batch sampling tests are conducted before delivery to reject unqualified products and eliminate hidden corrosion risks in follow up service cycles.

Export Packaging Design and Post Shipment Technical Support
We design targeted packaging schemes for medium size and regular weight metal workpieces. Waterproof wrapping, buffer filling materials and strapping fixation are adopted for international multimodal transportation. On site staff supervise container loading operations to prevent surface scratch during transit. After shipment our team updates real time logistics information and sends operation maintenance documents to clients, delivering full coverage services from production stage to daily application period.

Weld Seam Visual Inspection and Defect Sorting
Certified inspectors perform appearance screening, dimensional measurement and flaw judgment on finished welded parts after processing. We check weld width, surface flatness and tiny surface defects invisible to ordinary workers. Standard inspection reports are filed separately for every production batch. Unqualified items are sent for rework in time to guarantee stable bearing capacity of parts running under continuous heavy loads.

Custom Fixture Manufacturing and Precise Locating
Our technical team designs special positioning fixtures for irregular structural components before mass production. Clamping tools fix raw materials at preset spots to narrow assembly deviation. Even clamping force avoids workpiece shifting during welding operations and steadily improves dimension consistency of batch manufactured products.

Workshop Environment Control and Production Scheduling
The production workshop maintains proper temperature and dust free conditions to guarantee stable machining quality for stainless steel and aluminum alloy workpieces. Production managers sort orders based on part weight and delivery deadline. Reasonable task allocation coordinates automatic cutting and manual fine polishing to shorten total manufacturing time for bulk projects.

After Sales Guidance and Regular Customer Return Visit
After clients receive shipments, technicians provide online or on site assembly guidance for metal structural assemblies. We carry out periodic return visit communication to collect real working condition data of delivered products. Improved process schemes are offered for repeat orders to form full cycle service covering production, delivery and long term field application.

We provide whole procedure customized fabrication including laser cutting, press brake forming, multi station welding and multi layer anti rust treatment. Skilled technicians supervise each working procedure to guarantee stable machining precision for stainless steel, aluminum alloy and galvanized structural components. Pre cleaning surface impurities and precise notch processing lower defect probability and raise joint strength to support subsequent assembly and field installation operations.

Full lifecycle quality monitoring covers every manufacturing stage. QC staff sample mechanical performance indexes, weld compactness and coating corrosion resistance of each batch. With dedicated turnover racks and enclosed spraying workshops, we finish pre assembly and anti collision packaging efficiently to deliver personalized metal processing solutions for agricultural machinery, logistics equipment and municipal engineering projects.

Custom Vibration Stress Relief and Metallographic Detection

Our standardized vibration aging procedure eliminates residual internal stress of medium sized welded assemblies after manufacturing. Welded workpieces are loaded on professional vibration platforms with adjustable frequency to homogenize internal metal grain distribution. Professional hardness tests and metallographic analysis are carried out on sampled specimens to verify structural stability and wear resistance. Qualified products are attached with formal inspection records before delivery. This process effectively reduces slow deformation risk for structural parts serving in variable temperature environments and maintains reliable mechanical performance during long term field operation.
 

Laser Edge Trimming and Pre Weld Oil Stain Removal

We adopt industrial laser edge trimming to obtain tidy joint profiles for thin and medium metal sheets prior to welding. Operators adjust laser power and cutting margin according to material hardness and load requirements. Surface grease and oxidation residues on edge zones are cleared by alkaline cleaning agents and mechanical brushing to get clean welding contact surfaces. Regular edge contour promotes full metal fusion during subsequent welding processes, reduces incomplete penetration defects and enhances durable shear strength of welded joints under alternating heavy loads.

CNC Planar Milling Residual Stress Elimination Processing

We adopt gantry CNC milling equipment to process rough machined structural frames after welding and assembly. Multi group milling cutters perform uniform material removal on uneven welding bosses and raised surface areas to release stress accumulated during high temperature welding. Built in dimensional measuring probes detect flatness and perpendicularity of finished components batch by batch. Milled workpieces maintain stable geometric tolerance in follow up surface spraying and on site installation steps, reduce matching clearance between adjacent assemblies and promote overall running reliability of heavy duty equipment frames applied in engineering machinery scenarios.

01 Raw Material Hardness Classification Screening
Low alloy steel duplex aluminum alloy and galvanized sheets get hardness and defect checks before storage. Qualified materials are stored in numbered dry zones against oxidation. Regular warehouse monitoring stabilizes material performance before processing.

02 Laser Cutting and Groove Precision Machining
Laser machines cut special openings and bevel grooves per customer drawings. Smooth edges reduce later polishing work. Tight tolerance control ensures precise fitting of separate structural parts.

03 Dual Station Collaborative Manual Welding
Certified senior welders handle irregular large structural parts manually. Skilled operation forms dense weld beads and reduces pore defects in small batch custom production.

04 Natural Room Temperature Stress Relief Treatment
Welded workpieces cool statically in ventilated constant temperature workshops. The process optimizes metal grain structure boosts impact resistance and lowers breakage risks under outdoor alternating loads.

05 Wheel Grinding Surface Activation Pretreatment
Automatic grinders remove rust welding slag and surface protrusions. Matte base surfaces strengthen paint adhesion and extend finished product anti corrosion service life.

06 Batch Pre Assembly and Clearance Verification
Workers use custom jigs and digital micrometers for offline trial assembly. They adjust gaps to meet design standards and remove fitting obstacles for clients' field installation.

07 Shock Absorbing Export Logistics Packaging
Finished goods are wrapped with waterproof films and fastened to fumigated wooden pallets by steel straps. Foam protects corners from collision in cross border multi modal transport.

08 Full Cycle After Sales Tracking Technical Service
Full production records are archived for every order. Professional engineers reply to installation queries quickly after delivery and arrange regular inspection services.

Standard Specification

Production Equipment List
Category	Name	Main Parameters
Machining Equipment	CNC Horizontal Boring-Milling Center	12000x4000
	CNC Gantry Machining Center	12000x4000
	CNC Gantry Machining Center	3100x6500x1750
	CNC Gantry Machining Center	2800x6000x1250
	CNC Vertical Lathe	4000x2200
	CNC Vertical Lathe	2500x1600
	Double Housing Planer Milling Machine	6000x2000
	radial Drilling Machine	2000x1500
	CNC Horizontal Boring-Milling Center	8000x4000
	Single-arm Planer Milling Machine	1000x9000
	Single-arm Planer Milling Machine	1600x6000
	CNC Horizontal Boring-Milling Center	2000x4000
	Friction Press	/
Sheet metal Equipment	Hydraulic Press	3150KN
	Hydraulic Shearing Machine	20X2500
	Hydraulic Bending Machine	100/3200
	Hydraulic Bending Machine	300/4000
	Three-Roll Plate Bending Machine	25x2000
	Corrugated Fin Forming Machine	1.2--2.0
Welding Equipment	TIG Welding Machine	/
	MIG Welding Machine	/
	DC Submerged Arc Welding Machine	/
Cutting Equipment	Plasma Cutting Machine	3000x12000
	Laser Cutting Machine	1500x4000
	Laser Cutting Machine	3000x12000
Surface Treatment	Stainless Steel Sandblasting Room	6000x4000x4000
	Spray Painting Booth	13000x6000x3500
	Spray Bake Booth	4500x4000x4000
	Powder Coating Booth	4500x4000x4000
	Pickling and Phosphatizing Tank	4000x3000
	Automatic Shot Blasting Machine	4000x4000x6000
Heat Treatment Equipmen	RT3 Car Type Annealing Furnace	5000x1500x1500

Case Showcase

Engine Housing

Machining of Forgings

Laser Cutting

Large Equipment Frame

Large Machinery Assembly

Leveling Machine for  Aluminum & Copper Sheets

Company Profile

Shandong Zouping SHIHUA Machinery Tech-nology Co., Ltd., located in Binzhou, China,boasts nearly 30 years of expertise in weldingand mechanical processing. As a professionalmetal fabrication supplier, we deliver full-rangecustom metalworking products and services toglobal clients.

We specialize in machining, metal fabrication,heat treatment, surface treatment and assembly,processing carbon steel, stainless steel, alumi-num, copper, nickel and titanium alloys. Ourhigh-precision equipment features a maximumtravel range of 12m X 4m and a single-piecelifting capacity of 50 tons, making us highly ca-pable of manufacturing heavy-duty and over-sized structural components.

Our products serve machinery, rail transit,energy, shipbuilding, bridge, infrastructure andoil & gas industries, with rich experience in papermaking machinery, petroleum equipmentand transformer oil tanks. We also offer cutting,bending, rolling service.With competitive pricing and professional capabilities, we satisfy diverse and specialized cus-tomer demands reliably.

FAQ

Q: Is the welding and sealing performance reliable for large diameter products?
A: Professional welders, double-layer shaft seal structure, and air tightness tests ensure no leakage.
 
Q: Can I customize the surface paint color and coating process?
A: Yes, we offer OEM & ODM painting services. Paint color and anti-rust coating are customizable.
 
Q: Do you make customized products?

A: Yes, all parts are customized according to customer's drawings or samples. If you wantto manufacture any parts, please feel
free to send us your drawings or samples.

Q: Will you be safe after we receive the drawings?

A:  Yes, we wllnot disclose your design to third parties without your permission. Before you send the drawing to us, we can sign
a confidentiality agreement.

Q: What payment terms do you accept?

A: Wire transfers, Western Union, Paypal, Trade Assurance are accepted, so please let us know which is convenient for you.