Bao Steel Q620e, Q690A Round Tube 6-610mm Outer Dia Seamless Carbon Steel Round Tube

Standards & Grades

Standard of Carbon Steel Seamless Round Tube
ASTM A53 Gr.B	Black and hot-dipped zinc-coated steel pipes welded and seamless
ASTM A106 Gr.B	Seamless carbon steel for high temperature service
ASTM SA179	Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes
ASTM SA192	Seamless carbon steel boiler tubes for high pressure
ASTM SA210	Seamless Medium-carbon boiler and superheater tubes
ASTM A213	Seamless alloy-steel boiler, superheater, and heat-exchanger tubes
ASTM A333 GR.6	seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
ASTM A335 P9,P11,T22,T91	Seamless ferritic alloy-steel pipe for high-temperature service
ASTM A336	Alloy steel forgings for pressure and high-temperature parts
ASTM SA519 4140/4130	Seamless carbon for mechanical tubing
API Spec 5CT J55/K55/N80/L80/P110/K55	Seamless steel pipe for casing
API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70	Seamless steel pipe for line pipe
DIN 17175	Seamless steel tube for elevated temperture
DN2391	Cold drawn seamless prevision pipe
DIN 1629	Seamless circular unalloyed steel tubes subject to special requirements

Type & Application & Tolerance

Types and Application of Carbon Steel Seamless Round Tube
Types	Application
Structure Purposes	General structure and mechanical
Liquid Services	Petroleum, gas and other fluids conveying
Low and Medium Pressure Boiler Tube	Steam and boiler manufacturing
Hydraulic Pillar Service	Hydraulic support
Auto Semi-shaft Casing	Auto sem-shaft casing
Line Pipe	Oil and gas conveying
Tubing and Casing	Oil and gas conveying
Drill Pipes	Well drilling
Geological Drilling Pipe	Geological drilling
Furnace tubes, heat exchangers tubes	Furnace tubes, heat exchangers

Tolerances of Carbon Steel Seamless Round Tube
Pipe types	Pipe sizes(mm)	Tolerances
Hot rolled	OD<50	±0.50mm
	OD≥50	±1%
	WT<4	±12.5%
	WT 4~20	+15%, -12.5%
	WT>20	±12.5%
Cold drawn	OD 6~10	±0.20mm
	OD 10~30	±0.40mm
	OD 30~50	±0.45
	OD>50	±1%
	WT≤1	±0.15mm
	WT 1~3	+15%, -10%
	WT >3	+12.5%, -10%

Pipe Coating Processes

Specification	Hot Rolled Wall Thickness: 0.5-200mm Hot Rolled OD: 10-610mm Cold Drawn Wall Thickness: 0.5-6mm Cold Drawn OD: 6-57mm
Length	3m, 6m, 12m, customized
Standard	JIS, AISI, ASTM, GB, DIN, EN
Technical treatment	Cold Drawn, Hot Rolled
Material	Q195, Q215, Q235, Q275 1045 1020 20MnCr5,A53,A283,A135,A36,A106,A179,A214,A192,A226,A315,10#,20#,45# Q195,Q235,Q275,Q345,S235,S355,St33,St35,St37,St52,16Mn,Q345B,Q345C,Q345D,Q345E,Q390,Q390B,Q390C, Q390D,Q390E,Q420,Q420B,Q420C,Q420D,Q420E,Q460,Q460D,Q500C,Q500D,Q500E,Q550C,Q550D,Q550E, Q620C,Q620D,Q620E,Q690A,Q690B,Q690C,Q690D,Q690E,Q690D,Q690C,Q890C,Q890D, 16Mo3,16MnL,16MnR ,16Mng,16MnDR,HG785D,S690QL,50MN,etc

Packaging & Shipping

Carbon Steel Seamless Round Tube packing details
a) Packing: standard seaworthy export wooden pallets,water proof paper, pvc film, interleaving paper,in 20' or 40' container or as per customers' requirements.
b) Delivery: products in stock can be prepare within 3 days after receiving deposit.
                   products as your order can be finished within 15 days under 500 tons.

Δ Packing and Shipping of high pressure and vessel plate

Transports---------Container sizes:
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Lengh)x2352mm(Width)x2698mm(High)
 
20feet container load 25tons Tubes whose length is under 5.8m
40feet container load 25tons Tubes whose length is under 11.8m

BAO STEEL Co., Ltd is a professional manufacturer engaged in the research,development,production,
sale and service of stainless steel sheet, stainless steel pipe, bar, coils. We are located in Tianjin with
convenient transportation access. Our factory have rich experience in producing as we are engaged in
domestic market for more than 20 years.

Our advantages.
Quality Assurance: To provide quality products at the same time to improve after-sales service
One-stop Service: We have a compatible and experienced R&D team.
Independent factor: We have our own factory and give the best price.
Professional Team: Professional team to provide you with efficient service.

Q1. What are your company's main products ?

A1: Our main products are stainless steel, carbon steel, galvanized steel, aluminium steel, ppgi steel products, including sheets, pipes, coils, strips, bars and channels.

Q2. What are the advantages of your company ?
A2: We guarantee that the quantity and specification of products are in full compliance with the standards of customer orders. We support any kinds of test. In addition, We also have more professional service and competitive price.

Q3. How do you control quality ?
A3: We provide Factory Test Report, also support Third Party Inspection.

Q4. How many coutries you already exported ?
A4: Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Chile, Mexico, Venezuela, Argentina, Kuwait, Saudi Arabia, UAE, Sri Lanka, Indonesia, Bangladesh, Turkey, India, etc.

Q5. Can you provide sample ? Do you support OEM ?
A5: Yes. Small samples in store can be provided for free. Customized samples will take about 2-3days.

Q6: What's your payment terms ?
A6: By T/T, L/C (30% deposit in advance, balance 70% before shipment), Western Union, Paypal, or Trade Online.