Q195/Q215/Q235/Q345 Rectangular hollow section/ RHS

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
5000 m.t./month

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Product Description:

Product   Name

rectangular hollow section/ RHS

Size

Size:

10*10--500*500mm

Thickness:

0.45--16mm

Length:

3-12m

Steel Grade

Q195,Q215,Q235,Q345,16Mn, 20#

Standard

ASTM A500,EN10219,GB/T6728,GB/T6725,JIS G3466

Usage

1. For Structure, Airport, Railway

2. Construction and so on.

Ends

Plain end or By Your Choice

Surface

Bared Or With Oiled Or Galvanized

Technique

ERW ,Hot Rolled and Cold Rolled

Section Shape

Rectangular

Inspection

With Hydraulic Testing, Eddy Current ,   Infrared Test

Package

Bags, Bundle, In Bulk, Containers

MOQ

20 Metric Ton / Can Be Negotiated

Supply Ability

15,000 Metric Ton/Month

Date of Delivery

7 days(Qty within 1000 Metric Ton) or   According To The Quantity

Port of Shipment

Tianjin, China

Payment

L/C   T/T 


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Q:What is the meaning of "DN" and "Phi" in the dimensioning of steel pipe diameter and how to apply the mark?
DN refers to the nominal diameter of the pipe, but this is neither the outside diameter nor the inside diameter, and the "Phi" means the outer diameter of the steel pipe. For example, the same nominal diameter of the steel pipe due to its different wall thickness, corresponding to the outer diameter is also different. As can be seen from the chart below:Project control table (commonly used) diameter pressure pipe standard pressure pipe standard pressure pipe standard specification DN- nominal diameter: diameter of large diameter series DN15- 22mm DN20- 27mm DN25- phi, Phi Phi Phi Phi 34mm, DN32- 42mm DN40- 48mm DN50- 60mm DN65-, Phi Phi 76 (73) mm, DN80- 89mm DN100- 114mm DN125- and Phi Phi Phi. 140mm DN150- 168mm DN200- 219mm DN250- phi, Phi Phi Phi Phi 273mm, DN300- 324mm DN350- 360mm DN400- 406mm DN450- 457mm DN500- and Phi Phi Phi Phi, 508mm DN600- 610mm, DN15- 18mm series of small diameter Phi Phi Phi, DN20- 25mm DN25- 32mm DN32- 38mm DN40- 45mm DN50- Phi Phi, Phi Phi Phi 57mm DN65- 73mm, DN80- 89mm DN100- 108mm, DN125- 133mm DN150- 159mm DN200- and Phi Phi Phi Phi, 219mm DN250- 273mm DN300- 325mm DN350- 377mm, Phi phi,
Q:What type of steel pipe dance is used in general?
The steel pipe fittings used in the pipe dance are made of smooth surface material, usually chrome or polished by steel or iron.
Q:How to descaling galvanized steel pipe?
Galvanized steel tubes will not rust in principle.... Batch rust with weak acid water immersion, individual can use steel wire brush brush on it.
Q:What is the difference between galvanized iron pipe and galvanized steel pipe? Or called different, in fact, is referred to as galvanized pipe?
Just name different, all refers to GB/T 3091-2015 "low pressure fluid transport welding pipe" contained in the galvanized pipe.Galvanized pipe means zinc plated, suitable for water, air, heating, steam and gas and other low pressure fluid conveying straight welded steel pipe, longitudinal submerged arc welding (SAWL) steel pipe and spiral seam submerged arc welding (SAWH) steel pipe.
Q:What are low-pressure carbon steel tubes?
Pipe fittingsA pipe fitting is a piece of pipe that is connected to a pipe. According to the connection method can be divided into socket type pipe fittings, threaded fittings, flange fittings and welding pipe four categories. Multipurpose; made of the same material as pipes. Elbow (elbow), flange, three pipe and four pipe (crosshead) and reducer (reducer) etc.. Elbow for pipeline corner; flange for the pipe and pipe interconnected parts, connected to the pipe end, three pipe for three pipe collection; four pipe for four tubes together place; for two pipes of different diameters connected to different diameter pipe.
Q:What is the outer diameter and wall thickness of the welded steel pipe of national standard DN250?
DN250 is the nominal diameter, the outer diameter of the steel pipe is 273mm, the thickness is above 6.5mm.
Q:When can I use the PVC pipe and when to use the galvanized pipe?
PVC pipeline use temperature is -5 to 90 degrees or so, according to the current market price of around 6000 yuan per ton, the price is cheap. Its corrosion resistance is good, can resist most of the acid and alkali, and unlike the steel pipe that is easy to rust, so in the construction of the upper and lower water pipes and other fields have gradually replaced the trend of steel pipe.
Q:Is it good to buy a simple wardrobe or a steel pipe?
Therefore, the simple solid wood wardrobe and steel pipe wardrobe is good or bad, according to personal preferences to set, and that environmental protection seems to have grades, easy to crack
Q:The outer circle of a seamless steel pipe 50 head into the outer circle of the 40 to close
That is, according to the production process of different classification, different from hot rolling (expansion) pipe. In the process of expanding the tube or raw material tube, it is processed by multiple cold drawing, usually on single chain or double chain cold drawn machine of 0.5 ~ 100T. Cold rolled steel pipe (DIAL) in general, steel pipe for low and medium pressure boiler tube, high-pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, oil cracking tube, machining pipe, thick wall pipe, small diameter and cold drawn steel tube also includes other tubes, carbon thin-walled steel, alloy thin-walled steel pipe, stainless steel pipe, special-shaped wall steel pipe. The outside diameter of cold drawn steel tube wall thickness to 6mm, to 0.25mm, to 5mm diameter thin-walled tube wall thickness is less than 0.25mm in size, accuracy and surface quality were significantly better than the hot (expanding) tube, but by the process control, its diameter and length are limited.
Q:What does "HBB" glass steel pipe mean?
Good water resistance, can be used for a long time in wet or water, and the ordinary composite is not water resistant, can only be used in dry environment.Heat resistance, fire resistance is superior to epoxy, glass fiber reinforced plastics and plastic and other materials. It can be used at 130 degrees for a long time, and not burned in case of fire.The utility model has the advantages of insulation, corrosion prevention, no rust, long service life, etc.. Generally up to 50 years, without maintenance.Simple and convenient installation and construction, because this product is light weight, high strength, laying construction method can properly solve the excavation due to road construction, exposed for a long time, prominent problems of city traffic, to achieve the excavation backfill pavement, buried at night, can normal traffic during the day.

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