What is the lead time for orders?

Peak season lead time is within 15 workdays, while off-season lead time is approximately one month.

Which markets do you export to?

We have exported to more than 50 countries, mainly in the Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Japan, Indonesia, Bangladesh, Turkey, and India.

API-5CT Seamless 16"& 18-5/8"&20"Casing Pipe&OCTG Oilfield Services

Name: API-5CT Seamless 16"& 18-5/8"&20"Casing Pipe&OCTG Oilfield Services
Brand: Permanent Steel Manufacturing Co., Ltd.
SKU: 1962392062

Hunan, ChinaPermanent Steel Manufacturing Co., Ltd.

US$46.00

1 kg

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

24 Hours Online Service

Warranty

24 Months

Type

Seamless

Technique

Hot Rolled

Material

Carbon Steel

Surface Treatment

Black

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration

Section Shape

Round

Transport Package

Bundling

Trademark

PMC

Origin

China

Key features

Seamless Manufacturing: Hot rolled seamless process ensuring high strength for oil/gas drilling, boiler, and hydraulic applications.

Multiple Connection Types: Supports P, STC, LTC, BTC, NUE, EUE, and premium gas-tight connectors for diverse well requirements.

Comprehensive Quality Control: Rigorous testing including X-ray, hydrostatic, flattening, impact, and chemical composition analysis.

Wide Size Range: Outer diameter 1.315-20 inches, wall thickness 0.133-0.500 inches, lengths R1/R2/R3.

24-Month Warranty: Comprehensive 24-month warranty coverage with 24-hour online after-sales service support.

Global Export Experience: Exported to over 50 countries including USA, Russia, Middle East, and Europe since 2017.

OEM & Sample Support: Free small samples available; customized samples produced within 2-3 days; OEM services supported.

Company profile

Experienced TeamFast DeliveryManagement CertificationIn-stock Capacity

Permanent Steel Manufacturing Co., Ltd.

Hunan, China

Business Type: Manufacturer/FactoryExport Year: 2017-04-01Nearest Port: TIANJIN, SHANGHAIAverage Response Time: ≤4.62hTerms of Payment: T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryPermanent Steel Manufacturing Co., Ltd. is identified as a China-based manufacturer/factory producing steel pipes and fittings, with production bases in Shandong and Tianjin and headquarters in Hunan. The supplier has self-operated import and export rights, eight years of export experience, and exports representing 71%–90% of total sales. It offers customization from samples and reports in-stock service capacity, but lacks overseas warehouses, showrooms, agents or branches, and has not participated in offline trade shows. Service governance is weakly documented: no written supplier-service assessment procedures or approved supplier list are reported. R&D-related capabilities are limited, with no ODM, SDK, or OEM service for popular brands. ERP, OA, CRM, and SAP-based digital management are not established. Certification evidence, financial credibility evidence, and customer case evidence are insufficient.

Supplier typeThe supplier is explicitly identified as a manufacturer/factory and a limited company. Its stated business focuses on steel pipes and fittings, while its business scope also includes marine equipment, components, supporting services, and import/export activities.

After-Sales capabilityThe supplier reports in-stock service capacity and accepts multiple quotation terms, including FOB, CIF, CFR, and EXW. However, it has no overseas warehouse, showroom, agent, or branch, serves zero stated overseas countries through such coverage, and has no written service-capability assessment procedures or approved supplier list, indicating limited documented service infrastructure.

R&D capabilityThe supplier can customize products from samples, but explicitly does not provide ODM services, popular-brand OEM services, or an available SDK. It also lacks ERP integration and reports zero use of OA, CRM, and SAP systems, providing no evidence of strong product-development or digital innovation capability.

Production capacityThe supplier is a steel pipe and fittings factory with production bases in Shandong and Tianjin, 30 employees, in-stock service capacity, and stated one-month average lead times in both peak and off-season. It also has 50 qualified suppliers for service capability, although no written assessment procedure or approved supplier list is maintained.

Customization capabilityThe supplier explicitly offers customization from samples, and its company description states that it provides customized products and services. This is direct evidence of sample-based customization capability, though it does not establish broader design or ODM capability.

Product Q&A

Q:What are the main products offered?

Our main products are carbon steel seamless pipe, pipe fittings (flange, elbow, tee, reducer, nipple etc.), and sheets, pipes, coils, strips, bars, and channels.

Q:What are the advantages of your company?

We offer finest quality, best-in-class products at the most advantageous rates, supported by state-of-the-art manufacturing processes and contemporary technologies.

Q:How do you control product quality?

A dedicated quality control team supervises the entire process system. Regular tests include chemical composition analysis, mechanical properties (elongation, yield strength, tensile strength), DWT, impact, blow, flattening, X-ray, and hydrostatic tests.

Q:What payment terms do you accept?

We accept T/T (30% deposit, 70% before shipment), L/C at sight (30-120 days), Western Union, PayPal, or Trade Online.

Q:Can you provide samples or support OEM?

Yes, we support OEM. Small samples from stock are provided for free, while customized samples take approximately 2-3 days to produce.