Are you a manufacturer or trading company?

We are a professional manufacturer with our own International Trade Department, allowing us to better understand customer needs.

What certifications does the machine have?

The products are certified by the Industry Administration Authority and meet 3C and CE technical standards.

What is the lead time for production?

Peak season lead time is 1-3 months, while off-season lead time is one month.

Tongda 3.5′ 3D Computerized Invisible Sock Knitting Machine

Name: Tongda 3.5′ 3D Computerized Invisible Sock Knitting Machine
Brand: Qingdao Tongda Textile Machinery Co., Ltd.
SKU: 1939856915

Shandong, ChinaQingdao Tongda Textile Machinery Co., Ltd.

US$3,000.00-4,000.00

1 Piece

Sample price:US$4500.00/piece.Request sample

Product profile

Customization

Available

Warranty

1 Year

Type

Sock Making Machine

Model NO.

TONGDA 3.5' 3D

Knitting Machine Cut

Tongda

Knitting Product Type

Socks

Knitting Style

Flat

Knitting Method

Automatic

Needle Style

Automatic

Needle Bar Style

Automatic

Computerized

Certification

Condition

New

After-sales Service

1 Year

Automatic

Yea

Product Name

Sock Machine

After-Sales Service Provided

Engineers Available to Service Machinery Overseas

Function

Can Select The Socks of Varicose Veins Connected R

Selected

Terry for Socks Toe and Sock Heel

Kind of Machine

2 PCS Bottom Yarn Feeder

Key Words

3D Socks

Transport Package

Shipping Package

Specification

According to type

Trademark

TONGDA

Origin

Made in China

Key features

Multi-Size Compatibility: Supports 3.5, 3.75, 4, 4.5, and 5-inch cylinder diameters for diverse sock styles.

High-Speed Efficiency: Running speed of 200-350 RPM significantly improves production efficiency and consistency.

Complex Pattern Capability: Enables jacquard patterns, terry socks, and reinforced heels with 6-13 color interchangeability.

Intelligent Material Saving: Reduces material waste through intelligent control systems and precise sewing trajectory calibration.

Rapid Pattern Change: Optimized adjustments drastically reduce setup time for convenient pattern switching.

Dual-Use Functionality: Supports both terry and plain sock knitting with single needle tube and dual entry design.

Professional Manufacturer: Established in 1952 with 65+ years history, holding own International Trade Department.

Comprehensive Certification: ISO9001, ISO14001, ISO13485 certified; products meet 3C and CE technical standards.

Company profile

Qingdao Tongda Textile Machinery Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading Company, Group CorporationExport Year: 1988-02-01Nearest Port: QINGDAO, SHANGHAI, NINGBOAverage Response Time: ≤3.89hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryTongda is identified as a factory and a China government group company with more than 60 years of operating history. The supplier reports 10 production lines, 50 years of total R&D engineer experience, 41–50 quality-control staff, and annual productivity of 1,000 ring spinning machines and air jet looms. It has broad export-market coverage, its own import and export rights, and has exported since 1988. ISO 13485, ISO 14001, and ISO 9001 certifications are reported. Evidence supports established production, export, and management-system capabilities. However, the provided information does not verify after-sales services, financial credibility, customer cases, customization services, or specific innovation offerings such as ODM, SDK, 3D design, or private-mold development.

Supplier typeThe supplier is explicitly classified as a factory, with headquarters in Shandong Province. Its representative title and company background identify it as Shandong Tongda Group, focused on ring spinning, cotton yarn spinning, and rotor spinning machinery.

CertificationsThe supplier reports ISO 13485, ISO 14001, and ISO 9001 management-system certifications. These provide explicit evidence of certification coverage in quality, environmental, and medical-device-related management systems, although certificate validity details are not provided.

R&D capabilityThe company states that it has complete infrastructure for product R&D, continuous innovation, and technological optimization, and reports 50 years of total R&D engineer experience. Specific capabilities for ODM, SDK availability, private molds, 3D design, and new-product development remain unknown.

Production capacityProduction capability is supported by 10 operating production lines, 41–50 quality-control staff, and reported annual productivity of 1,000 ring spinning machines and air jet looms. The company also describes annual production of 20,000 units of various cotton and spinning machinery models, although the relationship between these production figures is not clarified.