pre-galvanized steel pipe is the cold rolled strip steel first galvanized and then galvanized steel with galvanized steel in the welding made of steel pipe, because galvanized strip steel pipe using cold rolled strip steel first galvanized and then made of pipe, so the wall thickness is more accurate, the same specification of wall thickness of galvanized strip steel pipe and hot-dip galvanized steel pipe, galvanized strip steel pipe to be cheaper than the hot-dip galvanized steel pipe, galvanized than hot-dip galvanized steel pipe to be a lot lower.
To the naked eye looks like the steel pipe is bright, smooth and beautiful surface, strictly speaking also belongs to a kind of hot-dip galvanized pipe, just processing technology flow is different. Galvanized pipe is generally the first bare narrow strip through continuous hot-dip zinc equipment zinc plated, processed into galvanized strip, and then the galvanized strip after welding made of galvanized pipe.
Pre galvanized pipe
zinc coating :40-200g/㎡
Usage: Used for greenhouse structure, low pressure liquid delivery,such as water, gas,and oil
standard: GB/T3091-2001,BS1387-1985,DIN EN10025 EN10219,JIS G3444:2004 ,ASTM A53
Steel Grade: Q195 ,Q235 ,Q345, S235, S235JR,S355JR.STK400/500
Packing:Packed in bundles with several steel strips.two tags on each bundle,Wrapped in waterproof paper
Galvanized strip steel pipe as a metal material with excellent properties compared to hot galvanized pipe.
Process difference
Galvanized strip pipe: After the galvanized strip steel is rolled and shaped, it is welded by electric arc welding, gas welding or argon arc welding, which can be understood as galvanized first and then welded;
Hot galvanized pipe: hot rolled strip steel as raw material, welded with welding rods or wires that match the material of the steel pipe, and then pickled to remove oxides on the surface of the steel pipe, oil, etc., and then the surface of the steel pipe is coated with a layer of zinc by means of hot-dip zinc plating, which can be interpreted as welding first, and then galvanized;
Different anti-corrosion properties
Galvanized belt pipe: zinc layer is thin, generally in about 30 grams, anti-corrosion properties relative to the hot galvanized pipe is poor; because of its low zinc layer, the naked eye to see the steel pipe is bright, smooth and beautiful surface;
Hot-dip galvanized pipe: zinc layer is thicker, in about 300 grams, with better anti-corrosion properties; due to the high zinc layer, closer to the original color of zinc, hot-dip galvanized steel pipe zinc layer surface is rougher, the appearance is not bright;
Structure is different
Galvanized strip pipe: galvanized strip steel pipe is a strip product, with a larger width and smaller thickness; thickness is usually below 2mm;
Hot-dip galvanized pipe: hot-dip galvanized pipe is a tubular product with a thickness usually above 3mm; it is too thin and easy to bend and deform;
Different uses
Galvanized strip pipe: it is suitable for small parts and has good processing performance, mainly used in the manufacture of a variety of metal products, such as automotive parts, threading pipe, sports equipment and so on;
Hot-dip galvanized pipe: hot-dip galvanized steel pipe is suitable for large parts, with the advantages of uniform coating, strong adhesion, long service life, etc. It is mainly used for conveying liquids and gases, such as water pipes and oil pipelines;
How do I order our products?
Ordering our steel products is very simple. You just need to follow the steps below:
1. Browse our website to find the right product for your needs. You can also contact us through website message, email, WhatsApp, etc. to tell us your requirements.
2. When we receive your quote request, we will reply you within 12 hours (if it is a weekend, we will reply you as soon as possible on Monday). If you are in a hurry to get a quote, you can call us or chat with us online and we will answer your questions and provide you with more information.
3.Confirm the details of the order, such as product model, quantity (usually starting from one container, about 28tons), price, delivery time, payment terms, etc. We will send you a proforma invoice for your confirmation.
4.Make the payment, we will start the production as soon as possible, we accept all kinds of payment methods, such as: telegraphic transfer, letter of credit, etc.
5.Receive the goods and check the quality and quantity. Packing and shipping to you according to your requirement. We will also provide after-sale service for you.
Post time: May-11-2025
