What are the delivery terms?

We accept FOB, CFR, CIF, EXW, DDP, and DDU delivery terms.

What is the lead time for production?

The average lead time is one month for both peak and off-season periods.

Can you provide OEM services?

Yes, OEM service is available. We can customize steel grades, delivery conditions, and sizes according to customer requirements.

Thickness 2mm 3mm 4mm Precision Low Tolerate Hydraulic Carbon Steel Tube

Name: Thickness 2mm 3mm 4mm Precision Low Tolerate Hydraulic Carbon Steel Tube
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2134947055

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.00-20.00

300 Meters

Product profile

Customization

Available

Type

Seamless

Technique

Cold Roll and Cold Drawn

Model NO.

Cfs360

Material

Carbon Steel

Surface Treatment

Ba(Bright Annealed), Electrolytic Polishing

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Mining, Special Purpose

Section Shape

Round

Standard

DIN 2391/En 10305/SAE J524/ASTM A269/En 10216

Delivery Condition

Ap, Ba, Cfa, Cfp

Steel Grade

St37.4 St52.4/E235 355/A822/1008-1010/Cfs360/316L

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Application

Precision Application

Transport Package

Bundles or Boxes

Specification

OD1-250mm

Origin

China

HS Code

7306610000

Key features

High Precision & Low Tolerance: Precision hydraulic tubes with tight tolerances for high-pressure applications.

Multiple Surface Treatments: Options include Bright Annealing, Black Phosphating, and Cr6-Free Galvanizing.

Wide Material Selection: Available in Carbon Steel (St37.4, St52.4, E235) and Stainless Steel (316L).

Strict Quality Inspection: 100% Eddy Current Test, size/surface check, and tensile strength verification.

Custom Standards Compliance: Meets DIN 2391, EN 10305, ASTM A269, and SAE J524 standards.

Versatile Applications: Ideal for hydraulic circuits, pneumatic lines, and automotive hydraulic cylinders.

OEM Service Available: Custom steel grades and delivery conditions available upon request.

Professional Manufacturing: Advanced cold rolling/drawing lines ensure excellent surface condition and performance.

Company profile

Zhangjiagang Chewit International Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: OEM Service AvailableExport Year: 2013-08-01 CertifiedNearest Port: shanghaiAverage Response Time: ≤7.52h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryZhangjiagang Chewit is a China-based limited trading company established in 2010, with stated precision-tube and steel-forging manufacturing activities. The supplier reports ISO9001:2015 certification, more than 10 production lines, approximately 5,000 tons of annual seamless-steel-pipe productivity, broad export-market coverage, and one-month lead times in both peak and off-peak seasons. Its quality claims include 100% dimensional and surface checks, batch chemical and mechanical testing, and non-destructive testing upon request. Evidence is insufficient to assess after-sales service, financial credibility, and customization capability. Innovation evidence is limited to an associated forging operation reporting 11 authorized patents, while customer evidence consists of one listed buyer and one trade transaction.

Supplier typeThe supplier is identified as a China-based limited company and trade company, with stated manufacturing activities in precision steel tubes and forgings. Its product scope includes seamless, welded, carbon, stainless, hydraulic, cold-drawn, and precision tubes, indicating a specialized steel-product supplier with both trading and manufacturing positioning.

CertificationsThe supplier explicitly reports an ISO9001:2015 management-system certificate. It also describes inspection and industry-related qualifications associated with its forging operation, including API 20B, PED, and classification-society credentials, although the scope and holder of each qualification are not separately specified.

R&D capabilityThe supplier describes advanced production and inspection equipment, precision-tube manufacturing, and a forging operation with 11 authorized patents, including three invention patents. These statements provide explicit but limited evidence of process and product-development capability, mainly linked to the forging operation rather than clearly to the entire supplier entity.

Production capacityThe supplier reports more than 10 production lines, annual seamless-steel-pipe productivity of 5,000 tons, heat-treatment furnaces, inspection equipment, and manufacturing of precision tubes and forgings. The descriptions also cite a 10,000-square-meter tube operation and a substantially larger forging facility, although employee and facility figures are inconsistent across slices and should be verified.

Client casesThe supplier states that it serves wind power, oil and gas, transportation, shipbuilding, and gearbox sectors and has entered the global purchasing system of a major company since 2006. The trade data identifies one buyer and one transaction, so sector references are available but the breadth and depth of verifiable customer cases remain limited.

Product Q&A

Q:What materials are available for these hydraulic tubes?

We offer Carbon Steel (St37.4, St52.4, E235, E355) and Stainless Steel (316L, 1.4404). Other steel grades are available upon request.

Q:What surface treatments do you provide?

We provide Bright Annealing (BA), Black Phosphating, Cr6-Free Galvanizing, and Electrolytic Polishing to ensure low roughness and good mechanical performance.

Q:What standards do your tubes comply with?

Our tubes comply with DIN 2391, EN 10305, SAE J524, ASTM A269, and EN 10216 standards.

Q:How do you guarantee product quality?

We conduct 100% Eddy Current Tests, size and surface checks, and mechanical tests. A pre-production sample is provided before mass production, and final inspection is done before shipment.

Q:What are the accepted payment terms?

We accept T/T and L/C. Payment currencies include USD, EUR, HKD, and CNY.