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Our highly-skilled manpower is dedicated to producing the finest quality steel pipe, pipe fittings, meeting a wide variety of material specifications. Their knowledge and experience of metal properties, welding procedures and quality control have set the pace and standard expected by our customers world-wide.

Steel can be categorized into four basic groups based on the chemical compositions:

Long radius elbows
Carbon steel
is formed when two elements, iron and carbon, is combined with carbon being used as the alloying element.
ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
Stainless steel
is more expensive than carbon and alloy steel and only accounts for a small number of steel used in the global...
ASTM A335 P22 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
Alloy steel
is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight...
There are several different material of abrasion resistant pipe

Each grade is typically made to a specific Brinell hardness value, as opposed to other steels that are made with tensile strength and toughness in mind.

SHS ceramic lined
SHS are currently being developed the world over for the production of powders and near-net shape components of advanced materials.
Ceramic tile lined pipe
has very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe and gives a very smooth surface.
Ceramic ring composite steel pipe
The wear resistant ceramic ring is a special kind of ceramic with Al2O3 as the main raw material and the rare metal oxide as the flux.

Abrasion occurs when materials are rubbed across one another over a period of time.

Bi Metal Clad pipe
Bi Metal Clad
Bimetal Clad Pipe and Bend are cast with mold vanishing vacuum suction casting cladding process.
Rare earth metal wear resistant pipe
Rare earth alloy wear-resistant high chromium cast iron pipe under compared with the high manganese steel materials

What Is Abrasion Resistant Steel

Some abrasion is intentional, such as sanding, grinding, and blasting. However, unintentional abrasion can lead to component failure so it is important to use the proper materials to ensure that surface wear does not lead to unanticipated breakdown of structures or parts. While steel in general has excellent resistance to abrasion, not all steels are equal.

How Does It Work?

The chemical composition of abrasion resistant steel is one of the attributes that make it more immune to wear than other types of steel. There are several alloys that can be used increase the abrasion resistance. Carbon helps block dislocations, which increases the hardness and strength of a steel. The added carbon also allows the steel to form microstructures with increased hardness when heated and quenched. There are other elements that can be added to abrasion resistant steel to increase its hardness value too. Chromium and manganese are also added to abrasion resistant steels to help reduce the negative effects caused by wear.

Heat treatment is another factor that helps the steel resist abrasion. Abrasion resistant steel must have a microstructure that allows it to have a high hardness. This is accomplished, in part, by adding the proper alloying elements. However, this alone is not enough to ensure the proper microstructure is formed. The steel must also undergo a heating and a rapid quenching process to form microstructures such as martensite and bainite which gives the steel the required high hardness values. Care must be taken when welding or heating abrasion resistant steels. If they are heated to a high enough temperature, it may have an annealing effect on the steel, causing it to lose some of its hardness and, therefore, its abrasion resistance.

What Types of Abrasion resistant pipes Are Available?

There are several different abrasion resistant steel grades. Each grade is typically made to a specific Brinell hardness value, as opposed to other steels that are made with tensile strength and toughness in mind. This is because hardness is one of the most important factors when trying to increase abrasion resistance.

What is SHS?

Self-propagating high temperature synthesis (SHS) is used to describe a process in which the initial reagents (usually powders), when ignited, spontaneously transform into products due to the exothermitic heat of reaction.

A well-known example of SHS reaction is the thermite reaction given below:

Fe2O3 + Al → 2Fe + Al2O3

This reaction generates temperatures above the melting point of alumina and is used in the thermit welding process for joining railway lines.

Several other terminologies - such as combustion synthesis, gasless combustion or self-propagating exothermic reaction - are used to describe the process.

The types of material that can be formed using this process include metal borides, silicides, carbides, nitrides, sulphides, aluminides and oxides.



Carbon steelspecification, Standard and identification

Carbon steel pipe tubing is used to transport fluids and gases in a variety of pneumatic, hydraulic, and process applications.

ASTM/ ASME- Standards for pipes
ASTM A53
Standard Spec. for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A106 / A106M - 11
Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A179 Standarts
specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
Carbon Steel Chemical composition
Steel Grade Standard Number Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
20 GB/T699 Bar 0.17-0.23 0.17-0.37 0.035 0.035 0.35-0.65 0.25 0.3 Cu:0.25 410 245 25 156 ψ%:55
20 GB3087 Pipe 0.17-0.23 0.17-0.37 0.035 0.035 0.35-0.65 0.25 0.3 Cu:0.25 410-550 245 20
20 GB/T8163 Pipe 0.17-0.23 0.17-0.37 0.035 0.035 0.35-0.65 0.25 0.3 Cu:0.25 410-550 245 20
20 GB9948 Pipe 0.17-0.24 0.17-0.37 0.035 0.035 0.35-0.65 0.25 0.25 Cu:0.25 410-550 245 21 Akv J:39
20 GB711 Plate 0.17-0.24 0.17-0.37 0.04 0.035 0.35-0.65 0.25 0.25 Cu:0.25 410 245 28
20G GB5310 Pipe 0.17-0.24 0.17-0.37 0.03 0.03 0.35-0.65 0.25 0.25 0.15 Cu:0.2;V:0.08 410-550 245 24 Akv J:35
20G GB6479 Pipe 0.17-0.24 0.17-0.37 0.035 0.035 0.35-0.65 410-550 245 24 ak J/cm2:49
20g GB713 Plate 0.2 0.15-0.3 0.035 0.035 0.5-0.9 400-530 245 26 Akv J:27;aku J/cm2:29
20R GB6654 Plate 0.2 0.15-0.3 0.03 0.035 0.4-0.9 400-520 245 25 Akv J:31
Q235A GB3724 Plate 0.14-0.22 0.3 0.05 0.045 0.3-0.65 375-500 235 26
Q235B GB3724 Plate 0.12-0.2 0.3 0.045 0.045 0.3-0.7 375-500 235 26 Akv J:27

Carbon steel pipe cooling method varies with the material. For most kinds of steel use natural cooling to meet the requirements.

Carbon steel pipe is the most commonly and widely used in the gas project field.
The large diameter coated steel pipes are widely used in tap water, natural gas, petroleum, chemical, pharmaceutical, telecommunications, electricity, large diameter steel marine engineering field generally less than the outer diameter of the tubes 89 are collectively referred to as small-diameter steel pipe.

Carbon steel tube mechanical properties is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel pipe anti-rust oil: it is with a high corrosion resistance and adhesion,which does not contain harmful substances such as formaldehyde, benzene, heavy metals, environmental protection and the operator's physical and mental health.

Density is calculated by dividing the mass by the volume. The density of carbon steel is approximately 7.85 g/cm3 (0.284 lb/in3).

Improving the performance of the steel is two ways, First, adjusting the chemical composition of the steel alloying; the other is the heat treatment, heat treatment and shaping deformation combination of approaches. In the field of modern industrial technology, heat treatment to improve the performance of the steel still occupy a dominant position.

Inner diameter of seamless steel pipe is more than 6.0mm and wall thickness is less than 13mm annealed seamless steel pipe material, which can be used W-B75 Webster Hardness test with very fast, easy, suitable for rapid non-destructive of the seamless steel pipe material qualified inspection.

Low carbon steel is a type of metal that has an alloying element made up of a relatively low amount of carbon. Typically, it has a carbon content that ranges between 0.05% and 0.30% and a manganese content that falls between 0.40 and 1.5%. Low carbon steel is one of the most common types of steel used for general purposes, in part because it is often less expensive than other types of steel.

Carbon steel pipe rusting

Carbon steel pipe anti-rust oil: it is with a high corrosion resistance and adhesion,which does not contain harmful substances such as formaldehyde, benzene, heavy metals, environmental protection and the operator's physical and mental health.

Brinell hardness (HB) with a certain diameter of the steel balls or tungsten carbide balls, pressed into the pattern surface of a predetermined test force (F), after the predetermined hold time after drop test force, the diameter of the measurement sample surface indentation (L).

Steel is an alloy that mostly contains iron. But its properties can be changed to suit specific requirements by adding certain other elements.

Encountered hole problems are very common in the welding process, welding materials drying, corrosion of the base metal and welding consumables, welding process is not stable enough oil and impurities and to protect the poor will be varying degrees of blowholes.

The strip is into the welded pipe unit and by the multi-channel roll rolling, gradually rolled strip steel, formed with an opening gap round tube, adjust the amount of reduction squeeze rollers, so that the weld gap control for carbon steel pipe in 1 ~ 3mm, and to weld ends flush. If the gap is too large and will result in reduced proximity effect, eddy current lack of heat, poor weld joint between grain yield incomplete fusion or cracking.

Delivery standard length of carbon steel pipe, also known as user requirements length or the length of the contract, there are four provisions in the existing standards

Carbon steel internal defects is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel tube mechanical properties is generated in the carbon steel smelting defect smelting and casting process, such as segregation, non-metallic inclusions, porosity, shrinkage and cracks.

Carbon steel defect is caused by the equipment, processes and operations in carbon steel smelting and rolling (forging) process, including scarring, cracks, residual shrinkage, layered, white point, segregation, non-metallic inclusions, such as osteoporosis and banded.

Related carbon steel products:
Carbon steel flanges
Carbon Steel Flanges
that is, the main material is carbon steel flange or end flange connectors. It contains carbon steel flange, known as carbon steel flange.
Carbon steel stub end
Carbon steel stub end
The stub ends are provided with a standard weld bevel and can be available in squared, flanged, victaulic and threaded ends.
ASTM A335 P22 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
Carbon steel caps
are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries.

Alloy Steel Pipes stock 

Developed with advance technology, these products are in compliance with the defined parameters of the industry.
These offered alloy pipes are available with us in divergent sizes and specifications meeting divergent demands of the clients.

Alloy steel specification, Standard and identification

Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

ASTM A335 Chrome Moly Pipe
Alloy Steel Chemical composition
Steel Grade Standard Number Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
1Cr5Mo GB1221 Bar 0.15 0.5 0.03 0.035 0.6 4-6 0.6 0.45-0.6 590 390 18
1Cr5Mo GB6479 Pipe 0.15 0.5 0.03 0.035 0.6 4-6 0.45-0.6 Cu:0.25 390-590 195 22 ak J/cm2:118
1Cr5Mo GB9948 Pipe 0.15 0.5 0.03 0.035 0.6 4-6 0.6 0.45-0.6 Cu:0.25 390 195 22 187 Aku J:92
1Cr2Mo GB9948 Pipe 0.15 0.5-1 0.03 0.035 0.3-0.6 2.15-2.85 0.45-0.65 Cu:0.25 390 175 22 179 Aku J:92
12CrMo GB/T3077 Bar 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.3 410 265 24 179 ψ%:60;Aku2 J:110
12CrMo GB6479 Pipe 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.4-0.55 Cu:0.25 410-560 205 21 ak J/cm2:69
12CrMo GB9948 Pipe 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.25 410-560 205 21 156 Aku J:55
12CrMoG GB5310 Pipe 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.4-0.7 0.3 0.4-0.55 Cu:0.2 410-560 205 21 Akv J:35
12Cr1MoV GB/T3077 Bar 0.08-0.15 0.17-0.37 0.035 0.035 0.4-0.7 0.9-1.2 0.3 0.25-0.35 V:0.15-0.3;Cu:0.3 490 245 22 179 ψ%:50;Aku2 J:71
12Cr1MoVG GB5310 Pipe 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.9-1.2 0.3 0.25-0.35 V:0.15-0.3;Cu:0.2 470-640 255 21 Akv J:35
12Cr1MoVg GB713 Plate 0.08-0.15 0.17-0.37 0.03 0.03 0.4-0.7 0.9-1.2 0.3 0.25-0.35 Cu:0.3 440 245 19 Akv J:31
12Cr2Mo GB6479 Pipe 0.08-0.15 0.4-0.7 0.035 0.035 0.5 2-2.5 0.9-1.2 Cu:0.25 450-600 280 20 ak J/cm2:48
12Cr2MoG GB5310 Pipe 0.08-0.15 0.5 0.03 0.03 0.4-0.7 2-2.5 0.3 0.9-1.2 Cu:0.2 450-600 280 20 Akv J:35
15CrMo GB/T3077 Bar 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.3 440 295 22 179 ψ%:60;Aku2 J:94
15CrMo GB6479 Pipe 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.4-0.55 Cu:0.25 440-640 235 21 ak J/cm2:59
15CrMo GB9948 Pipe 0.12-0.18 0.17-0.37 0.035 0.035 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.25 440-640 235 21 170 Aku J:47
15CrMoG GB5310 Pipe 0.12-0.18 0.17-0.37 0.03 0.03 0.4-0.7 0.8-1.1 0.3 0.4-0.55 Cu:0.2 440-640 235 21 Akv J:35
15CrMog GB713 Plate 0.12-0.18 0.15-0.4 0.03 0.03 0.4-0.7 0.8-1.2 0.3 0.45-0.6 Cu:0.3 450-590 295 19 Akv J:31
15CrMoR GB6654 Plate 0.12-0.18 0.15-0.4 0.03 0.03 0.4-0.7 0.8-1.2 0.3 0.45-0.6 Cu:0.3 450-590 295 19 Akv J:35
Standards for Alloy pipes & tubes
ASTM A213 T91
ASTM A213M-09
for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
ASTM A333
Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications.
ASTM A335 P22 is the part of ASTM A335, the pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding.
ASTM A335
Astm A335 standard specication for seamless ferritic alloy-steel pipe for high-temperature service
Related alloy steel products:
Carbon steel flanges
Alloy steel flanges
Alloy flanges are designed with care using current techniques under the visionary guidance of accomplished professionals at manufacturing unit.
稀土合金耐磨管
Rare earth alloy wear-resistant tube
Rare earth alloy wear resistant pipe has the characteristics of fast velocity and high flow rate is used for pneumatic, pump slurry, etc.
Wear resistant alloy composite pipe
Wear resistant alloy composite pipe
Wear-resistant alloy steel pipe as the base, lined with ultra-wear-resistant alloy, through the centrifugal casting, metallurgy combined to form a solid.

ASTM A519- specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.

EN 10216 is a European standard suitable for seamless steel tubes for pressure purposes.

EN 10216 non alloy steel tubes EN 10216 non alloy steel tubes

The main steel grade:
  • P195GH, P235GH, P265GH, 13CrMo4-5, 10CrMo9-10
  • Other grades of steel pipe can be provided based on negotiations.
Related stainless steel products
Austenitic stainless steel
Steel No. Standard No. Type Chemical composition Other
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
00Cr17Ni14Mo2 GB1220 Bar 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187 ψ%:60
00Cr17Ni14Mo2 GB4237 Plate 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 177 40 187
00Cr17Ni14Mo2 GB/T14976 Pipe 0.03 1 0.03 0.035 2 16-18 12-15 2-3 480 175 35
00Cr19Ni10 GB1220 Bar 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187 ψ%:60
00Cr19Ni10 GB4237 Plate 0.03 1 0.03 0.035 2 18-20 8-12 480 177 40 187
00Cr19Ni10 GB/T14976 Pipe 0.03 1 0.03 0.035 2 18-20 8-12 480 175 35
0Cr17Ni12Mo2 GB1220 Bar 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 40 187 ψ%:60
0Cr17Ni12Mo2 GB4237 Plate 0.8 1 0.03 0.035 2 16-18 10-14 2-3 520 205 40 187
0Cr17Ni12Mo2 GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-18.5 10-14 2-3 520 205 35
0Cr18Ni9 GB1220 Bar 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187 ψ%:60
0Cr18Ni9 GB4237 Plate 0.7 1 0.03 0.035 2 17-19 8-11 520 205 40 187
0Cr18Ni9 GB/T14976 Pipe 0.7 1 0.03 0.035 2 17-19 8-11 520 205 35
0Cr18Ni10Ti GB1220 Bar 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187 ψ%:50
0Cr18Ni10Ti GB4237 Plate 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 40 187
0Cr18Ni10Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 17-19 9-12 Ti:5C 520 205 35
0Cr18Ni12Mo2Ti GB1220 Bar 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 40 187 ψ%:55
0Cr18Ni12Mo2Ti GB4237 Plate 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 37 187
0Cr18Ni12Mo2Ti GB/T14976 Pipe 0.8 1 0.03 0.035 2 16-19 11-14 1.8-2.5 Ti:5C-0.7 530 205 35
1Cr18Ni9 GB4237 Plate 0.15 1 0.03 0.035 2 17-19 8-10 520 205 40 187
1Cr18Ni9 GB5310 Pipe 0.15 1 0.03 0.035 2 17-19 8-10 Cu:0.2 520 205 35
0Cr25Ni20 GB1220 Bar 0.08 1 0.03 0.035 2 24-26 19-22 520 206 40 187
ASTM A312/A312M
Steel No. Type Chemical composition
C Si S P Mn Cr Ni Mo Other ób ós δ5 HB
TP304 0.08 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304H 0.04-0.1 0.75 0.03 0.04 2 18-20 8-11 515 205 35
TP304L 0.035 0.75 0.03 0.04 2 18-20 8-13 485 170 35
TP316L 0.035 0.75 0.03 0.04 2 16-18 10-15 2-3 485 170 35
TP321 0.08 0.75 0.03 0.04 2 17-20 9-13 Ti:5C%-0.7 515 205 35
ASTM A312 Mechanical Property:
Steel Grade Heat Treatment Temperure Min. º F(º C) Tensile Strength Ksi (MPa), Min. Yield Strength Ksi (MPa), Min. Elongation %, Min
TP304 Solution 1900 (1040) 75(515) 30(205) 35
TP304L Solution 1900 (1040) 70(485) 25(170) 35
TP304H Solution 1900 (1040) 75(515) 30(205) 35
TP310S Solution 1900 (1040) 75(515) 30(205) 35
TP316 Solution 1900(1040) 75(515) 30(205) 35
TP316L Solution 1900(1040) 70(485) 25(170) 35
TP316H Solution 1900(1040) 75(515) 30(205) 35
TP316Ti Solution 1900(1040) 75(515) 30(205) 35
TP321 Solution 1900(1040) 75(515) 30(205) 35
TP321H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205) 35
TP347 Solution 1900(1040) 75(515) 30(205) 35
TP347H Solution Cold: 2000(1100) Hot: 1925(1050) 75(515) 30(205)
ASTM A312 Equivalent steel grade:
ASTM A312 JIS G3459 DIN 17440 BS NF
TP304 SUS 304 TP X5CrNi 18 9 304S18 A 49-230
TP304H SUS 304 HTP 304S59 A 49-214
TP310 304 LTP X2 CrNi 19 9 304S14 A 49-230
TP316 SUS 304L TP
TP316H 310STP X5 CrNiMo 18 10 316S18 A 35-573
TP316L SUS 316 TP 316S59 A 49-230
TP321 SUS 316 LTP X2 CrNiMo 18 10 316S14 A 49-230
TP347 316 HTP x10 CrNiTi 18 9 321S18 A 49-230
TP347H SUS 316 LTP X5 CrNiNb 18 9 347S18 A 35-573
Nominal wall thickness for ASTM A312(Seamless and straight seame welded steel pipes)
NPS ASTM A312  WT Tolerance, %
+
1/8-2 1 /2 20.0 12.5
3~18, t/D≤ 5% 22.5 12.5
3~18, t/D> 5% 15.0 12.5
≥ 20, welded 17.5 12.5
≥ 20, seamless, t/D≤ 5% 22.5 12.5
≥ 20, seamless, t/D> 5% 15.0 12.5
ASTM A312 Stainless Steel Pipes OD Tolerance
NPS ASTM A312  OD Tolerance
+
inch mm inch mm
1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) 0.4 0.8 1.6 2.4 3.2 4.0 4.8 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 0.8 0.8 0.8 0.8 0.8 0.8 0.8


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