Flat Bulb Bar Steel Ball From 12# To 22#

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Loading Port:
China main port
Payment Terms:
TT or LC
Min Order Qty:
50 m.t.
Supply Capability:
5000 m.t./month

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Product Description:

Commodity: Carbon Steel Flat Bar

Standard: GB, JIS, ASTM,

Material: Q235, SS400 or Equivalent

Origin place: China

Thickness: 3mm-30mm


Length: Max 12m

Certification: SGS/BV


Chemical composition

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Physical properties

Alloy No


Yielding strength point(Mpa)

Tensile strength (Mpa)

Elongation after fracture(%)

Thickness (mm)

Thickness (mm)






















Usage/Applications of Flat Bar

Widely used for construction;

Machinery manufacturing;

Iron tower steel structure;

Shipbuilding; Steel grating;




Railway spare parts;

Boilers making etc.


Packaging & Delivery

Packaging Details: The Steel Flat Bars are packed in bundles and loaded in 20 feet/40 feet container, or shipped by bulk cargo ,also we can do as customer's requirements.

Delivery Details:30~45 days upon the receipt of buyer payment by T.T. or L/C.


Production Flow

The Carbon Steel Flat Bar is made through three processes:

1.Feeding the material: Feeding the row material (the steel plate) to Slitting Line.

2.Slitting:The steel plate would be slitted into expected width by lengthways cutter.

3. Leveled and cutting: The plat bar would be ground into level by the grinder and then cut into required length.



Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: What makes stainless steel stainless?

A2: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.

Q3: Can stainless steel rust?

A3: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.


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Q:The total floor distribution along the wall surface 40x4 galvanized flat steel, flat paint is painted yellow mark or brush a straight chute
Mainly to use insulating coatings.
Q:Is the earthing electrode made of galvanized flat steel or bare copper wire?
Bare copper stranded wire is generally used in the equipment itself, and not buried in the ground; the connection mode is equipment - bare copper wire - grounding grid.
Q:How to determine the application direction of steel grid plate
The width of the groove generally refers to the length of the steel grid (including the required width of the groove), and the width of the steel plate along the longitudinal direction of the groove
Q:How to grounding lightning protection grounding?
In the lightning down the line corresponding to the outdoor depth of -0.8M, from being used as the lead line of the steel bar, welding a 40MM*4MM hot galvanized flat steel, this flat steel extended to the outdoor, from the outer wall distance of not less than 1.0M. For connecting equipotential band and adding artificial grounding body.
Q:What is the difference between 60X6 and 50X4 flat steel in grounding?
There are differences, mainly based on the local geological conditions, the purpose is to meet the requirements of grounding resistance.
Q:50*4 hot dip galvanized flat steel can be used as grounding. How many square feet can be used instead of ground wire?
The national standard is considered from an electrical angle. The size of the ground wire is defined as the same diameter of the ground wire and the phase line;
Q:Why is it better to use round steel than that of flat steel in lightning protection?
Presumably, it's a discussion, not an answer.At the same length and with the same cross section,(1) the contact area between flat steel and earth is slightly larger.(2) flat steel is easier to bend than round steel, so it is more convenient to construct.(3) flat steel is easier to connect with bolt by connecting bolt.
Q:Is medium plate steel flat?
Flat, refers to the width 12-300mm, thickness 4-60mm, cross section is rectangular in shape and with a blunt edge of steel. Flat steel can be finished steel, or can be used as the blank of welded pipe and thin slab for laminated sheet rolling. Main application: flat steel is used as a material, used for making iron, tools and machinery parts, and used as frame structures and escalators for buildings.
Q:Round bar, flat steel, not reinforced
Flat steel: can be used to make iron, tools and machinery parts, building used as housing structure, escalator.All belong to section steel. Round steel can be used as reinforcing steel, which is often referred to as light round bar and primary steel. Flat steel is finished steel, not steel.
Q:What is the thickness deviation of 40*4 galvanized flat steel?
40*4 galvanized flat steel GB permitted negative deviation value is the thickness deviation value is 0.2mm, the deviation 0.4mm, the width deviation value is the upper deviation 0.5mm, lower deviation 1.0mm,

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