Threaded & Coupled Galvanized Steel Pipe
01. Product Overview
For piping systems designed around threaded connections, galvanized steel pipe with machined threads and matching couplings offers a practical alternative to welded pipe joints.
Our Threaded & Coupled Galvanized Steel Pipe combines carbon steel pipe with a galvanized protective coating and machined threaded ends. Matching couplings can be included according to the order specification, allowing compatible pipe sections to be connected through threaded joints.
The galvanized coating protects the steel surface against corrosion, while the threaded ends provide a mechanical connection for compatible fittings and couplings. This configuration is used in piping installations where threaded assembly is specified.
Key Product Features
- Galvanized carbon steel pipe: A zinc coating provides surface corrosion protection for the steel pipe.
- Machined threaded ends: Provide connection interfaces for compatible threaded fittings and couplings.
- Matching couplings: Can be supplied according to the required pipe size and thread specification.
- Specified dimensions: Pipe diameter, wall thickness and length can be selected according to the applicable standard and order.
- Coordinated supply: Pipe threading, coupling requirements and protective packaging can be specified together.
02. Specifications & Product Selection
Choosing the correct threaded and coupled galvanized pipe requires matching pipe dimensions with the thread standard and coupling configuration.
| Pipe Material | Carbon Steel |
|---|---|
| Manufacturing Process | ERW welded or seamless, subject to the specified standard and confirmed order |
| Applicable Standard | EN 10255, where specified and confirmed |
| Nominal Pipe Size | According to the selected dimensional standard |
| Outside Diameter | Matched to nominal size and applicable standard |
| Wall Thickness | Medium or Heavy series, where applicable |
| Steel Grade | According to the specified material standard |
| Pipe Length | Random length or specified cut length, subject to availability |
| Thread Standard | BSP, NPT or another specified thread standard, subject to confirmation |
| Thread Configuration | Single-end or both-end threaded |
| Coupling | Matching size and internal thread specification |
| Galvanizing | Hot-dip galvanized finish, with coating requirements specified by order |
| Pipe-End Protection | Protective caps or other agreed protection |
Dimensional Reference
EN 10255 covers non-alloy steel tubes suitable for welding and threading. Its dimensional scope includes:
- Outside diameter: 10.2–165.1 mm.
- Nominal thread sizes: 1/8–6 inches.
- Wall thickness series: Medium and Heavy, where applicable.
These are dimensional ranges within the standard. Actual size combinations, wall thicknesses and tolerances depend on the selected standard series.
Thread and Coupling Compatibility
BSP and NPT are different thread systems. The thread form, dimensions and matching coupling must be specified together to ensure compatible connections. Confirming these details before production helps avoid connection mismatches during installation.
03. Connection Structure & Applications
Threaded Pipe Ends and Couplings
Our threaded pipe configuration uses machined external threads to connect with compatible internally threaded couplings. A coupling joins two pipe sections without requiring a welded joint at each connection.
Coupling size and internal thread specifications must match the pipe ends. Buyers can specify whether couplings are required with the pipes and confirm the corresponding quantities in the order.
Typical Applications
Threaded and coupled galvanized steel pipes are used where galvanized carbon steel and threaded connections are specified, including:
- Building water distribution and general plumbing.
- Industrial utility piping, subject to transported media and operating conditions.
- Mechanical and building service installations.
- Other construction and industrial piping systems designed for threaded connections.
The appropriate pipe specification depends on the transported medium, operating pressure, temperature, material requirements and applicable project standards.
04. Customization & Order Options
We organize orders around specific pipe dimensions, thread processing and coupling requirements.
| Pipe Diameter | Required nominal size and corresponding outside diameter |
|---|---|
| Wall Thickness | Specified thickness or applicable Medium / Heavy series |
| Pipe Length | Random length or specified cutting length |
| Thread Processing | Single-end or both-end threading |
| Thread Standard | BSP, NPT or another specified standard, subject to production confirmation |
| Coupling | Matching size, material and internal thread requirements |
| Galvanizing | Specified coating requirements and inspection criteria |
| Pipe-End Protection | Protective caps or other agreed end protection |
| Packaging | Steel-strapped bundles, protective packaging and specification identification |
| Product Marking | Order identification and marking requirements |
Pipe dimensions, thread specifications and coupling requirements should be confirmed together. This allows us to coordinate the pipe and connection components before production and shipment.
05. Manufacturing, Quality Control & Supply Support
Shanxi Midas Industrial Co.,Ltd is a steel products supplier established in 2012 in Shanxi, China.
Our product portfolio includes steel coils, steel plates, steel strips, H-beams and several steel pipe categories, including galvanized round pipes, pre-galvanized pipes, ERW pipes and seamless pipes.
For threaded and coupled galvanized steel pipe orders, our quality control focus includes:
- Pipe dimensions: Outside diameter, wall thickness and length.
- Thread processing: Thread dimensions and machining condition.
- Coupling compatibility: Matching size and internal thread specification.
- Galvanized coating: Surface condition and agreed coating inspection criteria.
- Order identification: Product specifications, batch identification and packing details.
Our company describes production-stage inspections, pre-shipment checks and loading-stage checks for applicable orders. Inspection arrangements and documentation are based on the confirmed purchase specifications.
We also support quotation preparation, technical specification communication, order confirmation, production progress updates and after-sales assistance. Our company reports sales coverage across 109 countries and regions.
06. Packaging & Bulk Supply
Threaded pipe ends need protection during storage, handling and transportation. Packaging can be arranged according to pipe dimensions, order quantity and shipping requirements.
Available packaging arrangements include:
- Steel-strapped bundles for organized handling.
- Protective caps or covers for threaded ends.
- Separate or coordinated packaging for couplings.
- Identification labels showing pipe dimensions and order specifications.
- Packing arrangements based on pipe length, bundle weight and container loading requirements.
We confirm pipe specifications, coupling quantities and packaging details before production and dispatch.
07. Request a Quotation
To request a quotation for Threaded & Coupled Galvanized Steel Pipe, send us your basic requirements:
- Nominal pipe size or outside diameter.
- Wall thickness and pipe length.
- Steel grade or applicable product standard.
- BSP, NPT or other required thread specification.
- Single-end or both-end threading.
- Coupling requirements.
- Galvanizing requirements.
- Estimated order quantity and destination market.
Contact Shanxi Midas Industrial Co.,Ltd to discuss your required specifications and bulk order. We will review the pipe dimensions, threading, coupling configuration and packaging requirements for your quotation.
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