Product Overview

Our Carbon Steel Flat Welding Loose Lap Joint Flange DN350 LTF Flange is designed for secure, flexible connections in piping systems requiring frequent assembly and disassembly. Manufactured from high-quality carbon steel, this flange features a flat welding face and loose lap joint design, allowing easy installation without welding to the pipe itself.

Ideal for use in industries such as oil & gas, water treatment, and chemical processing, this DN350 flange offers excellent strength, corrosion resistance, and reliable sealing performance. The loose flange style ensures quick alignment and maintenance, reducing downtime in critical applications.

Key Features:

• Material: Carbon Steel

• Type: Flat Welding Face, Loose Lap Joint Flange

• Size: DN350 (Nominal Diameter)

• Easy to install and remove without pipe welding

• Durable and corrosion-resistant

• Suitable for oil & gas, chemical, water treatment, and industrial pipelines

Product Specifications

Key Features

• ASME B16.9 compliant for international standard compatibility

• Available in seamless, welded, stamping manufacturing options

• High corrosion resistance for demanding industrial environments

• Lap joint flange connection for easy installation and disassembly

• Suitable for oil & gas, chemical, petrochemical, water treatment, and food industry pipelines

• Offered in multiple grades (304, 304L, 316, 316L, 321) and sizes up to DN600

Company Introduction — Hebei Cangtie Industrial Co., Ltd

Hebei Cangtie Industrial Co., Ltd is a leading manufacturer and exporter of stainless steel and carbon steel pipe fittings, including stub ends, flanges, elbows, reducers, and other custom components.

Based in Yanshan Economic Development Zone, Cangzhou City, Hebei Province, we operate a modern production facility with advanced CNC machines, forging presses, welding lines, and inspection equipment to ensure quality and reliability.

With over 10 years of experience, our products conform to ASME, ANSI, DIN, JIS, EN, and GB standards, and are widely used in oil & gas, petrochemical, water treatment, shipbuilding, and other industries. We provide OEM/ODM services and export to Europe, North America, Southeast Asia, the Middle East, and more.

We are committed to providing high-quality pipe fittings and long-term value to customers worldwide.

Contact Us

• Contact Person: Hudson Liu

• Mobile / WhatsApp: +86 157 3370 8805

• Email: hudson@cangtiepipe.com

• Website: https://ctflange.com/

• Factory Address: Yanshan Economic Development Zone, Yanshan County, Cangzhou City, Hebei Province, China

Frequently Asked Questions (FAQ)

1. Are you a manufacturer or trading company?
We are a manufacturer with our own factory located in Hebei, China. We specialize in stainless steel and carbon steel pipe fittings.

2. What materials do you offer?
Stainless Steel: 304, 304L, 316, 316L, 321, etc.
Carbon Steel: ASTM A234 WPB, A105, Q235, Q345, etc.
Special materials are available upon request.

3. Which standards do your products comply with?
ASME B16.9 / B16.5, ANSI, ASTM, DIN, JIS, EN, GB and so on  — with third-party inspection available.

4. Do you support OEM/ODM customization?
Yes, we offer custom fabrication, logo stamping, packaging, and sizing based on your drawings.

5. What is your minimum order quantity (MOQ)?
MOQ is typically 1 piece for standard items; customized parts may vary.

6. Do you provide free samples?
Yes, free samples are available for standard items; buyers cover shipping cost.

7. What is your delivery time?

• In-stock: 3–5 working days

• Bulk/custom orders: 10–25 working days

8. How do you guarantee product quality?
We conduct full quality control: raw material inspection, dimensional checks, surface finish review, and pressure/leakage testing. Third-party testing also available.