Tel: +86-577-86801027 / E-mail: cooper@lianhevf.com
Stainless Steel Fitting
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Size Range: 2"–8" (DN50–DN200)
Wall Thickness: 1.0–5.0 mm
Applicable Standards: GB, EN, DIN, and ASME
Available Materials:
0Cr18Ni9, SS304, S30408, SUS304, and 1.4301
0Cr17Ni12Mo2, SS316, and SUS316
SS304L, S30403, and 1.4306
SS316L, S31603, and 1.4404
Connection Type: Grooved Connection
Nominal Pressure: PN16
Hydrostatic Test Pressure: 2.5 MPa
Airtightness Test Pressure: 1.05 MPa
Applicable Gasket Temperature Range: -20°C to +110°C
Manufacturing Process: Mechanically formed from stainless steel pipes
Surface Treatment Options: Vibration Polishing, Magnetic Polishing, and Pickling
Product Marking: LOGO–OD–W.T.–Material. Customer logos, private brands, batch information, and other customized markings can be applied according to specific requirements.
Standard Packaging: Plastic Bags, Export Cartons, and Wooden Cases
Certificates: GB/T 19001-2016, ISO 9001:2015, CE documentation for applicable products, and Sanitary License
Brand: LIANHE
HS Code: 7307230000
Place of Origin: Wenzhou, Zhejiang, China
The actual working pressure and temperature limits depend on the product size, wall thickness, stainless steel grade, gasket material, transported medium, groove dimensions, and applicable project requirements.
The products can be supplied for use with compatible liquid and gaseous media, including:
Drinking water
Cold water and hot water
Wastewater
Industrial water
Oil and compatible liquid media
Gas and compatible gaseous media
Material and gasket compatibility should be confirmed according to the transported medium, operating temperature, system pressure, chemical conditions, and required service life.
For drinking-water, gas, oil, steam, or other specialized applications, customers should confirm whether additional testing, certification, or project-specific documentation is required.
The products can be used in a variety of commercial, residential, marine, industrial, and infrastructure projects, including:
Engineering and infrastructure projects
Ships and marine piping installations
Commercial buildings
Residential buildings
Hospitals and medical facilities
Hotels and public facilities
Environmental protection equipment
Water-treatment systems
Heating installations
Air-conditioning systems
Industrial processing facilities
They may be applied in water supply systems, direct drinking-water pipelines, gas distribution systems, wastewater systems, environmental protection pipelines, steam systems, heating networks, air-conditioning pipelines, and industrial water systems.
Before ordering, customers should confirm the required outside diameter, wall thickness, groove profile, gasket material, working pressure, operating temperature, and applicable dimensional standard.
High mechanical strength and structural stability
Excellent corrosion and oxidation resistance
Long operating service life
Low internal flow resistance
Good vibration and seismic performance
Reliable grooved connection
Durable and recyclable stainless steel construction
Fast and convenient installation
Suitable for concealed installation where permitted
Reduced overall installation and maintenance costs
Good resistance to wear and deformation
Hygienic construction for suitable drinking-water systems
Dependable sealing performance with reduced leakage risk
The grooved connection can simplify pipeline installation and reduce the amount of on-site welding required. It can also make inspection, maintenance, disassembly, and replacement more convenient.
Correct pipe alignment, groove dimensions, gasket selection, component assembly, bolt tightening, and final inspection are essential for reliable performance.
Groove dimensions and profiles may vary between different standards and manufacturers. Customers should confirm compatibility with the mating pipe and connection components before ordering.
Available testing procedures include:
Hydrostatic Pressure Test
Airtightness Test
Working Pressure Test
Negative-Pressure Test
Pull-Out Test
Cold- and Hot-Water Temperature-Cycling Test
Hydrostatic Bending and Torsion Test
Hydrostatic Vibration Test
Hydrostatic Impact Test
The applicable testing items and sampling ratio depend on the product specification, governing standard, intended application, and confirmed inspection plan.
Products are inspected before shipment. Standard delivery inspection covers:
Stainless steel material grade
Outside diameter and wall thickness
Product dimensions and tolerances
Groove dimensions and surface condition
Hydrostatic performance
Airtightness performance
Product markings
Quantities and packaging
Additional inspection items can be arranged according to the applicable standard and project requirements.
Inspection reports and supporting quality documents can be supplied according to the confirmed specifications and order requirements, including:
EN 10204 3.1 Material Test Certificate
Raw-Material Inspection Certificate
Radiographic Testing Report, when applicable
Hydraulic Test Report
Dimensional and Groove Inspection Report
Pressure and Airtightness Test Report
Third-Party Inspection Report
Other project-specific quality documents
The required inspection scope, testing ratio, document type, and third-party witnessing arrangements should be confirmed before production.
LIANHE applies in-process and final inspection procedures throughout raw-material preparation, cutting, machining, forming, welding, heat treatment, surface finishing, testing, marking, and packaging.
The principal quality-control procedures include:
Inspecting the outside diameter, wall thickness, material grade, documentation, and surface condition of incoming raw materials.
Checking the length, cutting position, and end condition of raw materials after cutting.
Inspecting the groove, outside diameter, wall thickness, and other critical dimensions after machining and forming.
Checking weld dimensions, weld appearance, alignment, and surface condition after welding and forming, where applicable.
Inspecting the product surface, dimensions, and grooved connection area after heat treatment.
Verifying surface quality after vibration polishing, magnetic polishing, pickling, or other surface treatment.
Performing hydraulic-pressure and airtightness tests according to the applicable inspection requirements.
Inspecting product markings, quantities, packaging materials, labels, and shipping marks before shipment.
Products are approved for shipment after completing the applicable inspection procedures.
Our manufacturing facility is equipped with five automatic pipe-welding production lines, two laser-cutting machines, five vibration-polishing machines, two magnetic-polishing machines, five airtightness and hydraulic-testing units, three forming machines, three grooving machines, two drilling machines, ten CNC lathes, and six end-processing machines.
Additional equipment includes two vertical hydroforming machines, two frame-type hydroforming machines, ten pipe-bending machines, eight automatic argon-arc welding machines, four hydraulic drawing machines, four high-speed hydraulic punching machines, two laser-marking machines, two packaging units, and other related production and inspection equipment.
These production capabilities support raw-material preparation, cutting, mechanical forming, grooving, welding, heat treatment, surface finishing, pressure testing, product marking, inspection, and export packaging.
Each product is protected with a plastic bag to reduce exposure to moisture, dust, and surface contamination. Products are then packed in reinforced export cartons and consolidated in wooden cases when required.
Customized cartons, customer logos, labels, barcodes, pallet packing, and other export packaging arrangements can be provided according to confirmed order requirements.
Our standard payment term is a 30% T/T deposit paid in advance, with the remaining 70% T/T balance paid before delivery. Specific payment conditions can be discussed according to the order value and cooperation requirements.
Available payment methods include T/T, Western Union, PayPal, and other mutually agreed methods.
Available Trade Terms: EXW, FOB, CFR, CIF, DDP, and DDU
Products can be delivered by sea freight, air freight, land transportation, or international express service.
The shipping method can be selected according to the order quantity, package volume, destination, required delivery schedule, and transportation budget.
Minimum Order Quantity: Normally 5–10 pieces, depending on the product specification and current inventory.
We maintain inventory for many regular products and commonly requested sizes. Selected products may have up to 5,000 pieces available. Because inventory levels change continuously, actual quantities and immediate-delivery availability should be reconfirmed when requesting a quotation.
Free Samples: Samples may be provided free of charge for dimensional verification and quality evaluation. International express delivery charges are normally paid by the recipient.
Quotation Time: Normally within three working hours after receiving complete specifications and quantity requirements.
Quotation Validity: Normally 3–7 days, subject to stainless steel raw-material prices, exchange rates, and current market conditions.
Regular-size products available from stock can normally be delivered within 3–7 days.
Orders requiring new production normally take approximately 25 days. The actual delivery schedule depends on the selected specifications, material availability, order quantity, inspection requirements, packaging, and current factory production plan.
Our standard product quality warranty period is one year.
If a manufacturing-related quality problem is confirmed during the warranty period, our team will investigate the cause and provide an appropriate technical or after-sales solution.
Customers should provide the order number, product specification, groove dimensions, material grade, installation conditions, operating pressure, working temperature, transported medium, and relevant photos or videos to assist with technical evaluation.
Extensive knowledge of international markets and the ability to support different technical and commercial requirements.
Direct manufacturing from our own factory in Wenzhou, Zhejiang, China.
An experienced technical and production team focused on maintaining consistent product quality.
Effective production and cost-control systems designed to provide competitive factory pricing.
Extensive experience in production, quality management, export packaging, and international sales.
Brand: LIANHE
Place of Origin: Wenzhou, Zhejiang, China
