1. chemical composition and technicial property

Standard	Grade	C max	Mn max	Si max	P	S	Yield strength max	Tensile strength	Elongation%
DIN17100	ST52-3	0.22	1.60	0.55	0.045	0.030	320	490-630	22
EN10025	S355J2	0.22	1.60	0.55	0.045	0.030	255	510-680	22

 

2. pipe picture

 

3. seamless steel pipe grades can be supplied

Seamless Steel pipe grades

Descriptions	Grades
Structural pipe	20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2 SAE1018, SAE1020, SAE1518, SAE1045.
Liquid pipe	20# q295b-e, q345b-e
High pressure boiler tube	20G 15MnG 20MnG 15CrMoG, 12Cr1MoVG St35.8, sa106b, sa106c, sa210a, sa210c, A333P2, A333P11, A33P12, A333P22, A33P36, A333P91, A333P92, A335T2, A335T11, A335T12, A335T22, A335T91, A335T23, A335T9
Pipeline	API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTMA53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245
Alloy pipe	4140, 42CrMo, 32CrMo, 15CrMo,
Packing	Black paint, Varnish painting, Tarpaulin packing
End	Common round end, beveled.
Processing	Galvanizing; cutting; making thread outside the pipe; Machining.

 

4. seamless pipe production procedure and methods:

1. Hot rolled seamless steel pipe 

using hot rolled steel pipe billet to make heating and piercing, elongating, sizing and stranghtening, cooling, finally hollow bars finished, this is the type most commonly used. Because it is hot rolled, so cost is lowest, but it is suit for large quantity, for small quantity, have to make cold drawn or round bar piercing. size: outer diameter 32mm- 499mm, wall thickness 4mm- 80mm

2. Cold drawn seamless steel pipe

 for outer diameter not over than 63.5mm, small size hollow bar, when demanded quantity is under 5 tons, usually make cold drawn hollow bar, using larger size hot rolled hollow bar to draw to the size demanded.

some size can be finished only by one time drawing, but some other sizes might need twice or three times to finish drawing, it takes time, so the cost is higher.

cold drawn size outer diameter 16mm- 63.5mm

3. Hot- expanding seamless steel piper

 For hollow bar sizes are special, not common sizes, have to use smaller thick wall hollow bar to hot expand to be larger size hollow bar, but the technical property for hot-expanded hollow bar will be lower than the original hollow bar. Size: outer diameter over 356mm.

5. seamless pipe detail:

 

6. seamless steel pipe stock picture:

 

7. steel pipe fabrication picture

steel pipe tube bending

steel pipe welding

 

 

 

 

 8.Our company

Tianjin Emerson Commercial and Trade Co.,Ltd has large stocks for the carbon steel and low alloy steel plates and sheets, especially have the thick plate and heavy plates on stock, also can provide the special material and large size steel plates, boiler and pressure vessel steel plate, marine steel plate, hot rolled steel plate for new production . Tianjin Emerson Commercial and Trade Co.,Ltd also has large stock for hollow bars, thick wall seamless pipes and tubes. Tianjin Emerson Commercial and Trade Co., Ltd can provide good service for customer, good quality products, fast delivery, and after-sale service.

 

 9.FAQ

Q: What the main products you can supply?

A: We are the professional and famous factory in China for Steel Plate; steel sheets; carbon steel plates, alloy steel plates, ms steel plate; mild steel plate; chequered steel plate; checkered steel plate; steel sheet; galvanized steel coils; galvanized steel plate, ppgi steel plate; corrugated steel plate; steel angle bars, steel beam, h beams, steel channels; flanges; steel pipes; seamless steel pipes; welded steel pipes, steel tubes; stainless steel pipes; stainless steel plate. And can provide many different processing: steel welding, making holes; steel plates cutting, plates processing, laser cutting, steel plates processing, plate work processing; metal plate processing;;cutting plates; plates cutting; laser cutting steel plates; ms plate cutting; cutting steel plate; steel plate cuttings; laser cut metal plate; iron plate cutting; cut metal plate; metal plate lasr cutting; metal plates cutting; plates cutting flange; cutting scrap steel plate; cut edge plate; steel cutting disc; carbon steel cutting disc; cutting disc for steel; cnc steel cutting; plate processing.

Q: Will you accept the customized and OEM product?

A: Yes, we can do the production based on your drawings and with your logo; also because we have very strong design and development team, so the feedback is very good for customized product.

Q: How about the MOQ? If my first order qty is small, will you accept?

A: We would like to do our best to support your trial order qty, so even 1 pc or 1 kg is ok to start cooperation; because we have confidence to move on second order with your esteemed company. Q: What the main products you can supply? A: We are the professional and famous factory in China for Steel Plate; steel sheets; carbon steel plates, alloy steel plates, ms steel plate; mild steel plate; chequered steel plate; checkered steel plate; steel sheet; galvanized steel coils; galvanized steel plate, ppgi steel plate; corrugated steel plate; steel angle bars, steel beam, h beams, steel channels; flanges; steel pipes; seamless steel pipes; welded steel pipes, steel tubes; stainless steel pipes; stainless steel plate. And can provide many different processing: steel welding, making holes; steel plates cutting, plates processing, laser cutting, steel plates processing, plate work processing; metal plate processing;;cutting plates; plates cutting; laser cutting steel plates; ms plate cutting; cutting steel plate; steel plate cuttings; laser cut metal plate; iron plate cutting; cut metal plate; metal plate lasr cutting; metal plates cutting; plates cutting flange; cutting scrap steel plate; cut edge plate; steel cutting disc; carbon steel cutting disc; cutting disc for steel; cnc steel cutting; plate processing. Q: Will you accept the customized and OEM product? A: Yes, we can do the production based on your drawings and with your logo; also because we have very strong design and development team, so the feedback is very good for customized product. Q: How about the MOQ? If my first order qty is small, will you accept? A: We would like to do our best to support your trial order qty, so even 1 pc or 1 kg is ok to start cooperation; because we have confidence to move on second order with your esteemed company.