Thick Wall GB 20# 45# Small Diameter Bright Carbon Seamless Tube Steel Pipes Thick Wall Seamless Steel Pipe Carbon Steel Pipe

• Customization: Available
• After-sales Service: 24 Hours Online
• Warranty: 1 Year
• Model NO.: 20# 45#
• Type: Seamless
• Technique: Hot Rolled /Cold Drawn
• Material: Carbon Steel/Alloy Steel
• Surface Treatment: Bare, Oil Coated/Black Painting
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Grades: St37. St52, SAE1020, SAE1518, Q345b, 45#
• Stock Size: Od32mm- Od580mm
• Wall Thickness: 1mm- 200mm
• Fabrication Type: Cutting
• Fabrication Type 3: Welding
• Packing: in Bundles with Tarpaulin Covering
• New Production Deliveyr Time: 7 Days
• Steel Pipe Type: Thick Wall Steel Pipe
• Outer Diameter: 10-800mm
• Transport Package: Bunlded with Plastic Bags, Shipping by Container
• Specification: OD76*ID56MM
• Origin: China
• HS Code: 7304199000
• Production Capacity: 50000pices/Year

Product Description

Thick Wall GB 20# 45# Small Diameter Bright Carbon Seamless Tube Steel Pipes Thick Wall Seamless Steel Pipe Carbon Steel Pipe
Product Description:
Seamless pipes grades and production methods
1. Round bar making Hollow Bar
   according to customer's demanded material to produce the round bar, then making annealled heat treatment,
then drill the hole as customer demanded inner diameter into the round bar, round bar piercing, making rough
hole, then make precision processing to make outer diameter and inner diameter as requested.
Any size hollowbar can be produced as demanded.
2. Hot rolled Hollow Bar 
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
3. Cold drawn Hollow Bar
 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 32mm- 63.5mm
4. Hot- expanding Hollow Bar
 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.

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.
outer diameter	10mm- 800mm
wall thickness	1mm- 200mm

Detalied Photos

Technological Process

Mill Test or Inspection
Packing & Deliver

Packaging & Shippin

FAQ

Q1: Are you trading company or manufacturer ?
 A: We are a factory. Our factory locates in Shandong Province. If you would like to visit our factory, just inform us in advance, we warmly welcome  all of our clients to visit us.

Q2: How long is your delivery time?
A: Generally, it is 10-15 days after receiving the deposit.

Q3: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q4: What is your terms of delivery?
A: EXW, FOB, CFR, CIF, etc.

Q5: What is your sample policy?
A: We can supply free samples if we have ready parts in stock, but the courier cost are charged.

Q6: what is your main products?
A: Our main products are listed as follows: Precision steel pipe, Hot Rolled steel pipe, Cold Drawn steel pipe, Seamless steel pipe, Alloy steel pipe, Bearing steel pipe, Welded pipe, Spiral pipe, Galvanized pipe etc.