factory low price China ASME SA335 Hot Rolling High Pressure Seamless Alloy Steel Pipe Grade P91/P22/P11/P5
We stay with the basic principle of “quality initially, services first, steady improvement and innovation to fulfill the customers” for your management and “zero defect, zero complaints” as the quality objective. To perfect our company, we give the goods while using the good high-quality at the reasonable selling price for factory low price China ASME SA335 Hot Rolling High Pressure Seamless Alloy Steel Pipe Grade P91/P22/P11/P5, The principle of our corporation is always to give high-quality merchandise, expert service, and honest communication. Welcome all friends to place trial get for making a long-term enterprise partnership.
We stay with the basic principle of “quality initially, services first, steady improvement and innovation to fulfill the customers” for your management and “zero defect, zero complaints” as the quality objective. To perfect our company, we give the goods while using the good high-quality at the reasonable selling price for China Steel Pipe, seamless steel pipe, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market. We are willing to cooperate with business friends from at home and abroad and create a great future together.
Overview
Application
It is mainly used to make high-quality carbon structural steel, low pressure medium pressure boiler pipe, super heated steam seamless carbon steel pipe
Main Grade
Grade of high-quality carbon structural steel: 10#,20#
Chemical Component
| Standard | Grade | Chemical Composition(%) | |||||||
| C | Si | Mn | P | S | Cr | Cu | Ni | ||
| GB3087 | 10 | 0.07～0.13 | 0.17～0.37 | 0.38～0.65 | ≤0.030 | ≤0.030 | 0.3～0.65 | ≤0.25 | ≤0.30 |
| 20 | 0.17～0.23 | 0.17～0.37 | 0.38～0.65 | ≤0.030 | ≤0.030 | 0.3～0.65 | ≤0.25 | ≤0.30 | |
Mechanical Property
| Standard | Steel pipe | Wall thickness | Tensile strength | Yield Strength | Elongation |
| GB3087 | (mm) | (MPa) | (MPa) | % | |
| ≥ | |||||
| 10 | / | 335～475 | 195 | 24 | |
| 20 | ＜15 | 410～550 | 245 | 20 | |
| ≥15 | 225 | ||||
Tolerance
Permissible deviation of outer diameter of steel tubes
| Type of steel tube | Permissible deviation | ||||||
| Hot rolled (extruded, expanded) steel tube | ± 1.0% D or ± 0.50, take the greater number | ||||||
| Cold drawn (rolled) steel tube | ± 1.0% D or ± 0.30, take the greater number | ||||||
Permissible deviation of the wall thickness of hot rolled (extrusion, expansion) steel tubes
Unit: mm
| Type of steel tube | Outer diameter of steel tube | S / D | Permissible deviation | ||||||
| hot rolled (extruded) steel tube | ≤ 102 | – | ± 12.5 % S or ± 0.40, take the greater number | ||||||
| > 102 | ≤ 0.05 | ± 15% S or ± 0.40, take the greater number | |||||||
| > 0.05 ~ 0.10 | ± 12.5% S or ± 0.40, take the greater number | ||||||||
| > 0.10 | + 12.5% S | ||||||||
| - 10% S | |||||||||
| hot expand steel tube | + 15% S | ||||||||
Permissible deviation of the wall thickness of cold drawn (rolled) steel tubes
Unit: mm
| Type of steel tube | Wall thickness | Permissible deviation | ||||||
| Cold drawn (rolled) steel tube | ≤ 3 | 15 – 10 % S or ± 0.15, take the greater number | ||||||
| > 3 | + 12.5% S | |||||||
| - 10% S | ||||||||
Test Requirement
Flattening test
Steel tubes with an outer diameter greater than 22 mm and up to 400 mm, and wall thickness greater than 10 mm should undergo the flattening test. After the samples are flattened
Bending test
Steel tubes with an outer diameter not greater than 22 mm should undergo the bending test. The bending angle is 90o . The bending radius is 6 times the outer diameter of the steel tube.After bending the sample, no fissures or cracks are permitted to appear on the sample.
Macroscopic examination
For steel tubes directly made by continuously cast billets or steel ingots, the supplying party should guarantee that there are no white spots, impurities, sub-surface air bubbles, skull patches or layering on the cross-sectional acid pickled macroscopic tissue of the billet or steel tube.
Non-destructive inspection
According to the demanding party’s request, which is then negotiated between the supplying and demanding parties and indicated in the agreement, ultrasonic flaw detection may be individually performed for steel tubes. The longitudinal manual defect of the reference sample tube should meet the requirements for post-inspection acceptance grade C8 specified in GB/T 5777-1996.
Product Detail
High Pressure Boiler Tube
GB/T5310-2017
ASME SA-106/SA-106M-2015
ASTMA210(A210M)-2012
ASME SA-213/SA-213M
ASTM A335/A335M-2018
We stay with the basic principle of “quality initially, services first, steady improvement and innovation to fulfill the customers” for your management and “zero defect, zero complaints” as the quality objective. To perfect our company, we give the goods while using the good high-quality at the reasonable selling price for factory low price China ASME SA335 Hot Rolling High Pressure Seamless Alloy Steel Pipe Grade P91/P22/P11/P5, The principle of our corporation is always to give high-quality merchandise, expert service, and honest communication. Welcome all friends to place trial get for making a long-term enterprise partnership.
factory low price China Steel Pipe, Seamless Steel Pipe, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market. We are willing to cooperate with business friends from at home and abroad and create a great future together.
