Where are you located and how long have you been operating?

We are based in Ningbo, China, established in 2009 (Company Info lists 2010). We have 15 years of export experience and serve global markets.

What products do you manufacture?

Our portfolio includes industrial fastening solutions (bolts, nuts, screws) and solar energy installation systems (racking, mounting accessories, cable management).

Durable Aluminum Piston Ring for Oil and Gas Applications

Name: Durable Aluminum Piston Ring for Oil and Gas Applications
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2201445105

Zhejiang, ChinaNingbo Yinzhou Sokun Import and Export Co., Ltd.

US$0.10-1.00

10,000 Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Warranty

Model NO.

CNC PART

Condition

New

Certification

CE, RoHS, ISO9001

Standard

DIN, ASTM, GOST, GB, JIS, BS

Customized

Material

Alloy

Application

Metal Recycling Machine, Metal Cutting Machine, Metal Spinning Machinery, Metal Processing Machinery Parts, Metal forging Machinery, Metal Engraving Machinery, Metal Drawing Machinery, Metal Coating Machinery, Metal Casting Machinery

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001/SGS

Package

Customer'require

Delivery Time

15-30

Transport Package

Customization

Specification

customization

Trademark

customization

Origin

Zhejiang

HS Code

732690

Production Capacity

100000000

Key features

ISO Certified Manufacturer: Established in 2009 with ISO certification and comprehensive R&D capabilities.

Flexible Customization: Full customization available from samples, designs, or client specifications.

Multi-Standard Compliance: Products meet DIN, ASTM, GOST, GB, JIS, BS, CE, RoHS, and ISO9001 standards.

Rigorous Quality Assurance: Two-stage protocol including pre-production sampling and full batch inspection.

Free Sample Availability: 1-3 pcs standard samples available with express shipping options.

Global Market Reach: Serving North America, Europe, Asia, South America, Africa, and the Middle East.

Fast Delivery Options: Customized samples ready within 15 working days.

OEM/ODM Support: Welcoming inquiries for bespoke products and long-term partnerships.

Company profile

High Repeat Buyers ChoiceODM ServicesR&D CapabilitiesProduction Process Visualization

Ningbo Yinzhou Sokun Import and Export Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 15 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤6.82h

AI-Powered supplier vetting

SummarySokun is a limited company with 21 employees, related companies, and product coverage including fasteners, machined parts, and stamping parts. It supports customization from samples and designs, offers ODM services, and reports OEM service for well-known brands. Quality processes include quality assurance, documented inspection instructions, and complaint-handling records, although finished-product inspection is random and only one quality inspector is reported. Production-related strengths include in-stock capability, CNC and punching equipment, and one-month stated lead times in both peak and off-season periods. Key limitations are the absence of a valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, branches, agents, or showrooms, and no documented R&D audit materials, new products in the past year, or R&D patents. Financial credibility cannot be determined from the provided information.

After-Sales capabilityThe supplier has a clear customer-complaint procedure with followed records and accepts several quotation and payment terms. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas services, limiting evidence of localized after-sales support.

R&D capabilityThe supplier provides ODM and multiple customization-based design services, but reports no new products during the past year, no available SDK, no R&D audit documentation, and zero R&D patents. These facts indicate design support but limited documented evidence of independent innovation.

Production capacityProduction evidence includes CNC and punching equipment, in-stock capability, one-month lead times in both peak and off-season, and a product scope aligned with machined and stamping parts. Nevertheless, there is no valid manufacturing-capacity contract with related subcontractors, which creates a documented capacity-governance weakness.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, flexible customization, and minor customization, and also offers ODM services. This is direct evidence of broad customization capability.

Product Q&A

Q:Can you provide samples?

Free samples (1-3 pcs standard specification) are available. Express shipping via DHL/UPS/FedEx is supported. Customized samples take 15 working days. Sample cost is refundable upon bulk order confirmation.

Q:What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against Bill of Lading. For orders under $1,000 USD, full advance payment is recommended. Acceptable instruments include SWIFT transfer, LC at sight, PayPal, and Western Union.

Q:What is your customization capability?

We offer flexible customization including from samples, designs, and full customization. We specialize in precision machining, CNC components, and bespoke products tailored to client specifications.

Q:What quality standards do you follow?

We implement a two-stage quality assurance protocol with pre-production sampling and full batch inspection including torque testing and salt spray analysis. Products comply with ASTM/ISO standards.

Q:What is your minimum order quantity?

The minimum order quantity is 1 Kg.