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Authorized Distributor · Anhui Tongfa

Your Global Partner for — Pipeline Repair Solutions

PipeKnot is your global trading partner for pipeline repair clamps, hot tapping machines, and maintenance equipment. Authorized distributor of Anhui Tongfa — bringing engineer-grade solutions to water, gas, oil, and chemical industries worldwide.

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30+
Countries Served
1000+
Specifications
ISO 9001
Certified Supply
15-day
Lead from Shanghai
Why PipeKnot

The Smart Alternative to Buying Direct

Why global engineers and procurement teams choose us over direct factory sourcing

01

Curated Selection

We screen, test, and certify every manufacturing partner. You get engineer-grade products without the headache of vetting factories yourself.

02

Single-Source Simplicity

One quote, one PO, one shipment. Mix repair clamps, tapping machines, connectors, and valves across brands in a single order.

03

Global Logistics

FOB Shanghai, CIF your port, or full door-to-door. We handle freight, customs paperwork, and insurance across 30+ destinations.

04

Engineer-to-Engineer Support

Spec matching, sizing guidance, on-site technical support. Our team speaks both engineering and international trade fluently.

Our Products

Complete range of pipeline repair and maintenance equipment

Pipe Repair Clamps

Pipe Repair Clamps

28 products
Tapping Machines

Tapping Machines

5 products
Pipe Cutting Machines

Pipe Cutting Machines

3 products
Saddle Clamps

Saddle Clamps

7 products
Connectors & Compensators

Connectors & Compensators

5 products
Valves

Valves

2 products
Accessories

Accessories

3 products
Socket Repair Clamp for DI Pipe

Socket Repair Clamp for DI Pipe

DN80 - DN1600 1.0MPa (标配) / 1.6MPa (高配) 球墨铸铁QT450-10
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Reverse Repair Clamp for DI Pipe

Reverse Repair Clamp for DI Pipe

DN100 - DN1000 1.0MPa 球墨铸铁QT450-10
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Sleeve Repair Clamp for DI Pipe

Sleeve Repair Clamp for DI Pipe

DN80 - DN1200 1.0MPa 球墨铸铁QT450-10
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Straight Pipe Repair Clamp for DI Pipe

Straight Pipe Repair Clamp for DI Pipe

DN50 - DN1600 1.0MPa 球墨铸铁QT450-10
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Reverse Repair Clamp for Plastic Pipe

Reverse Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Socket Repair Clamp for Plastic Pipe

Socket Repair Clamp for Plastic Pipe

OD20 - OD800 1.0MPa 球墨铸铁QT450-10
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Sleeve Repair Clamp for Plastic Pipe

Sleeve Repair Clamp for Plastic Pipe

OD63 - OD630 1.0MPa 球墨铸铁QT450-10
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Straight Pipe Repair Clamp for Plastic Pipe

Straight Pipe Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Anti-Pull-Out Repair Clamp for Plastic Pipe

Anti-Pull-Out Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Flange Repair Clamp

Flange Repair Clamp

DN100 - DN500 1.0MPa 球墨铸铁QT450-10
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Direct Repair Clamp for PE Pipe

Direct Repair Clamp for PE Pipe

OD50 - OD315 1.0MPa 球墨铸铁QT450-10
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Equal Tee Repair Clamp for Plastic Pipe

Equal Tee Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Reducing Tee Repair Clamp for Plastic Pipe

Reducing Tee Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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90° Elbow Repair Clamp for Plastic Pipe

90° Elbow Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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45° Elbow Repair Clamp for Plastic Pipe

45° Elbow Repair Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Socket Repair Clamp for Concrete Pipe

Socket Repair Clamp for Concrete Pipe

- 1.0MPa 球墨铸铁QT450-10
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Straight Pipe Repair Clamp for Concrete Pipe

Straight Pipe Repair Clamp for Concrete Pipe

DN100 - DN600 1.0MPa 球墨铸铁QT450-10
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Repair Clamp for Galvanized Steel Pipe

Repair Clamp for Galvanized Steel Pipe

DN20 - DN100 1.0MPa 球墨铸铁QT450-10
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Union Repair Clamp for Galvanized Steel Pipe

Union Repair Clamp for Galvanized Steel Pipe

DN15 - DN100 1.0MPa 球墨铸铁QT450-10
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Tee Repair Clamp for Galvanized Steel Pipe

Tee Repair Clamp for Galvanized Steel Pipe

DN15 - DN100 1.0MPa 球墨铸铁QT450-10
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Elbow Repair Clamp for Galvanized Steel Pipe

Elbow Repair Clamp for Galvanized Steel Pipe

DN15 - DN100 1.0MPa 球墨铸铁QT450-10
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Union Haff Clamp for Galvanized Steel Pipe

Union Haff Clamp for Galvanized Steel Pipe

DN15 - DN100 1.0MPa 球墨铸铁QT450-10
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Straight Pipe Repair Clamp for Steel Pipe

Straight Pipe Repair Clamp for Steel Pipe

DN125 - DN1400 1.0MPa 球墨铸铁QT450-10 / 碳钢
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Stainless Steel Plate Repair Clamp (FCH/CR Series)

Stainless Steel Plate Repair Clamp (FCH/CR Series)

OD25 - OD1080 1.0 MPa Stainless Steel
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FCE Connection Repair Clamp

FCE Connection Repair Clamp

OD25 - DN800 1.0 MPa Stainless Steel
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Reducing Straight Pipe Repair Clamp

Reducing Straight Pipe Repair Clamp

OD90 - OD315 1.0 MPa QT450-10
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Coupling Joint Repair Clamp (CX Series)

Coupling Joint Repair Clamp (CX Series)

DN80 - DN800 1.0 MPa QT450-10
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Gas Pipeline Repair Clamp (NBR Seal)

Gas Pipeline Repair Clamp (NBR Seal)

DN15 - DN100 1.0 MPa QT450-10
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DK6 Series Electric Tapping Machine

DK6 Series Electric Tapping Machine

DN80 - DN600 带压开孔 铸铁+钢材
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DK8 Series Electric Tapping Machine

DK8 Series Electric Tapping Machine

DN100 - DN800 带压开孔 铸铁+钢材
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ZG2-50 Sealed Manual Drilling Machine

ZG2-50 Sealed Manual Drilling Machine

DN20 - DN50 带压开孔 铸铁+钢材
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ZG2-100 Sealed Manual Drilling Machine

ZG2-100 Sealed Manual Drilling Machine

DN80 - DN100 带压开孔 铸铁+钢材
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MZ4-2 Sealed Drilling & Tapping Machine

MZ4-2 Sealed Drilling & Tapping Machine

DN15 - DN50 带压钻孔攻丝 铸铁+钢材
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WDG4-1 Universal Pipe Cutting Machine

WDG4-1 Universal Pipe Cutting Machine

- 管道切割 铸铁+钢材
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YGJ1-1 Hydraulic Pipe Cutting Machine

YGJ1-1 Hydraulic Pipe Cutting Machine

DN300 - DN1200 液压切割 铸铁+钢材
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SGJ100-300 Manual Pipe Cutting Machine

SGJ100-300 Manual Pipe Cutting Machine

DN100 - DN300 手动切割 钢材
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Saddle Clamp for DI Pipe (Split Tee)

Saddle Clamp for DI Pipe (Split Tee)

DN80 - DN1400 1.0MPa 球墨铸铁QT450-10
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Haff-Type Saddle Clamp for DI Pipe

Haff-Type Saddle Clamp for DI Pipe

DN80 - DN800 1.0MPa 球墨铸铁QT450-10
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Haff-Type Saddle Clamp for Concrete Pipe

Haff-Type Saddle Clamp for Concrete Pipe

DN100 - DN600 1.0MPa 球墨铸铁QT450-10
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Saddle Clamp for Plastic Pipe (Split Tee)

Saddle Clamp for Plastic Pipe (Split Tee)

- 1.0MPa 球墨铸铁QT450-10
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Haff-Type Saddle Clamp for Plastic Pipe

Haff-Type Saddle Clamp for Plastic Pipe

- 1.0MPa 球墨铸铁QT450-10
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Small Saddle Clamp for DI Pipe (DN50 Branch)

Small Saddle Clamp for DI Pipe (DN50 Branch)

DN80 - DN800 1.0MPa 球墨铸铁QT450-10
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Small Saddle Clamp for Plastic Pipe (DN25/50 Branch)

Small Saddle Clamp for Plastic Pipe (DN25/50 Branch)

- 1.0MPa 球墨铸铁QT450-10
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Universal Connector (Pipe to Flange)

Universal Connector (Pipe to Flange)

DN50 - DN1200 1.0MPa 球墨铸铁QT450-10
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Double-Socket Connector

Double-Socket Connector

DN100 - DN1000 1.0MPa 球墨铸铁QT450-10
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Single-Ball Universal Compensator

Single-Ball Universal Compensator

DN100 - DN600 1.0MPa 球墨铸铁QT450-10
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Flanged Expansion Joint

Flanged Expansion Joint

DN100 - DN1200 1.0MPa/1.6MPa Q235碳钢（环氧树脂涂层）
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Flanged Rubber Flexible Joint

Flanged Rubber Flexible Joint

DN32 - DN600 PN10/PN16 法兰+天然橡胶
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Gate Valve

Gate Valve

DN15 - DN300 1.0MPa 球墨铸铁
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Non-Rising Stem Flanged Soft-Seal Gate Valve

Non-Rising Stem Flanged Soft-Seal Gate Valve

DN50 - DN500 1.0MPa 球墨铸铁
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Link Coupling for Repair Clamp

Link Coupling for Repair Clamp

- – 橡胶/钢材
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Rubber Compensating Band

Rubber Compensating Band

- – 橡胶
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Pipe Repair Sealant Agent

Pipe Repair Sealant Agent

- - - - -
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Product Selector

Find the right product for your pipe repair needs

1 Pipe Material
2 Repair Location
3 Pipe Diameter

About PipeKnot

Global Trading Partner · Authorized Distributor of Anhui Tongfa Equipment Co., Ltd.

PipeKnot is an independent global trading company specializing in pipeline repair and maintenance equipment. As the authorized distributor of Anhui Tongfa Equipment Co., Ltd. — a high-technology manufacturer based in Anqing, Anhui, China with a 50,000 sqm facility, 10+ production lines, 90 Chinese patents, and ISO 9001 & 14001 certifications since 1994 — we deliver engineer-grade ductile iron repair clamps, hot tapping machines, connectors, and valves to water, gas, oil, and chemical industries worldwide. Every product uses QT450-10 ductile iron with EPDM/NBR sealing. Our growing partner network spans 5 core product series with 1,000+ specifications, backed by end-to-end service — from product selection and specification to logistics and on-site technical support.

Problems We Solve

Emergency Pipe Leak Repair

Our repair clamps enable rapid leak sealing on pressurized pipelines without shutting down the system — minimizing water loss and service disruption. Covers DI, steel, plastic, concrete and galvanized pipes from DN15 to DN2000.

Live Pressurized Tapping

Our DK6/DK8 tapping machines allow new branch connections to be made on live pipelines under full pressure, eliminating costly shutdowns. Supports DN80 to DN800 across iron, steel, concrete and PE pipes.

Universal Pipe Connections

Our connectors, compensators and expansion joints solve the challenge of joining different pipe materials and sizes — with anti-pull-out features, 10° angle compensation, and flange-to-socket adapters from DN50 to DN1200.

Full-Range Pipe Maintenance

From diamond-blade pipe cutting machines (OD400-2400mm) to saddle clamps for branch connections, we provide a complete toolkit for pipeline installation, maintenance, and emergency repair across all pipe materials.

1994
Partner Since
90
Patents (via Partner)
1000+
Specifications
ISO 9001 ISO 14001
Certifications
PipeKnot Manufacturing Partner Facility Field Installation Manufacturing Facility
Authorized Partnerships

Our Authorized Partners

Every product you receive comes from a fully vetted manufacturer — we stake our brand on their quality.

Anhui Tongfa Equipment Co., Ltd. ✓ Authorized

30-year ductile iron specialist · 90 Chinese patents · ISO 9001 & 14001

Founded 1994 in Anqing, Anhui. 50,000 sqm facility with 10+ production lines, producing 1,000+ specifications of pipeline emergency repair and hot tapping equipment.

1994 Founded
More authorized partners joining our network — curated for global utility and industrial buyers.

Get in Touch

Have questions about our products? Call, email, or send us an inquiry — we respond within 24 hours.

+86 15927266504
[email protected]
+86 15927266504 · Chat on WhatsApp
Operations based in Anhui, China · Shipping worldwide
FOB Shanghai | Lead time: 15 working days
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