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DESCRIPTION

• Overview
• Product Description
• Main Products
• Company Profile
• Company Advantages
• Certifications
• Packaging & Shipping
• FAQ

Overview

Basic Info.

Material	Ferrous-Based
Category	Powder Metallurgy Compressor Piston
Materials	Ferrous-Based / Iron-Based
Surface Treatment	Vapor Treatment (Steam Treatment)
Hardness (Vapor Treated)	60-90 Hrb
Density	6.8-7.1 G/Cm³
Transport Package	Box
Specification	Per Customer's Requirement
Trademark	N/A
Origin	China

Product Description

Product Description

OEM Custom Powder Metallurgy Compressor Piston for Appliances,Refrigerator Fridge,Air ConditionerOur OEM custom powder metallurgy compressor piston is precision engineered for refrigeration appliances, including refrigerators, freezers, and air conditioners. Manufactured from high-quality iron-based material through a controlled process of mixing, compacting, sintering, sizing, and optional vapor treatment, this component delivers excellent wear resistance, dimensional accuracy, and operational reliability. With vapor treatment, the piston achieves a hardness range of 60–90 HRB and a density of 6.8–7.1 g/cm³, ensuring long service life under cyclic compression loads. Customized according to customer drawings, our sintered metal piston is ideal for high-volume, cost-effective production in the appliance compressor industry.

Item	Details
Type	OEM Custom Powder Metallurgy Compressor Piston for Refrigerator / Fridge / Air Conditioner
Material	Iron-based (Ferrous-based)
Process Flow	Powder Mixing → Compacting → Sintering → Sizing → Optional: Vapor Treatment / Secondary Processing
Hardness (Vapor Treated)	60–90 HRB
Density (Vapor Treated)	6.8–7.1 g/cm³
Size	Customized per customer drawing
Application	Compressors for refrigerators, freezers, air conditioners, and other appliances
Origin	China
Packaging	Standard export carton or as per customer request

Main Products

Company Profile

Founded in 1993, Ningbo Ningjiang Powder Metallurgy Co., Ltd. is a national high-tech enterprise with over 30 years of experience, integrating R&D, design, production and sales. As a domestic sector leader, we have an independent R&D center, mold manufacturing center and advanced equipment, focusing on high-performance powder metallurgy products and providing professional solutions for global customers. Located in Mingzhou Industrial Park, Ningbo City, Zhejiang Province, China, we cover over 23,000 m² with high-standard workshops,advanced production,testing equipment and a complete automated production line, and our annual capacity exceeds 6,500 tons to efficiently meet global clients' large-scale and customized needs. Our products are widely used in automotive, home appliances and high-speed rail industries; backed by stable quality and reliable support, we have become the preferred partner for global industry leaders, enjoying a solid reputation. Established a provincial engineering technology center in 2012, we have over 20 patents (including inventions) for automotive and compressor components, and we master mature production technologies and strong mold R&D capabilities for customized manufacturing. Upholding "Putting Customers First", we implement the strict IATF16949 quality system, have long-term partnerships with global automotive and home appliance manufacturers, and have won awards like "Excellent Supplier" and "Quality Excellence Award". With around 230 professional employees, we rely on advanced management and craftsmanship, and our team is committed to building the "Ningjiang" brand into a century-old global name in the powder metallurgy industry.

Company Advantages

Certifications

Packaging & Shipping

FAQQ1. What is your terms of packing?
A: We generally pack our goods in blank brown cartons with rust-proof packaging, and pack them into wooden cases after containerization.Q2. What is your terms of delivery?
A: EXW, FOB, CIF
Q3. Can you produce according to the samples?
A: Yes, we accept orders based on your technical drawings. We will first check if the product matches our existing stock. If needed, we will revise the design and develop custom molds accordingly. Q4: I want to keep our design in secret, can we sign NDA?A: Sure, we can sign NDA before you send the drawing. Q5: What kind of production service do you provide?A: Mold Manufacturing, Sintering, CNC Machining, Compression Molding, Simple Assembly and Surface Treatment.