2 - 80 Mm SAE1518(Q345B) Precision Hollow Bar Seamless Steel Pipe Seamless Pipe Tube
SAE1518(Q345B) Precision Seamless Steel Pipe Seamless Pipe usded as Nitrogen Drilling Pipe chemical composition and techanical property:
| Standard | Grade | C max | Mn max | Ti | V | Si max | P | S | Yield strength max | Tensile strength | Elongation% |
| ASTM A29 | Sae1518 | 0.21 | 1.10-1.40 | 0.16 | 0.14 | 0.20 | 0.04 | 0.05 | 235 | 375-470 | 25 |
| GB/T3274-2007 | Q345B | 0.22 | 1.0-1.60 | 0.18 | 0.15 | 0.30 | 0.045 | 0.030 | 235 | 375-460 | 21-26 |
stock sizes:
outer diameters: 26mm -720mm
wall thickness: 6mm-80mm
length : 5000mm-13000mm
other sizes need new production.
Alloy elements in Q345B precision steel pipe have great influence on low temperature tempering brittleness. Chromium and manganese promote the segregation of impurity elements such as phosphorus at austenite grain boundaries, thus promoting low temperature tempering brittleness, tungsten and vanadium basically have no effect, molybdenum reduces the ductile-brittleness transition temperature of low temperature tempering precision tube, but it is not enough to inhibit low temperature tempering brittleness. Silicon can delay the precipitation of cementite during tempering and increase its formation temperature, so it can increase the temperature at which the brittleness of precision tube occurs at low temperature.
Q345B precision steel tube is a seamless steel tube with high precision and high brightness produced by cold drawing or cold rolling process. Its inner and outer diameter size can be less than 0.2mm, while ensuring the same bending and torsional strength, light weight, so it is widely used in manufacturing precision machinery parts and engineering structures.
Thick wall steel pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. For liquid transportation: water supply, drainage. For gas transportation: gas, steam, liquefied petroleum gas. For structural use: for piling pipes, Bridges; Pipe for wharf, road, building structure, etc.
FAQ:
Q:Can you send samples?
A:Of course, we can send samples to all parts of the world.
Q:What are the shipping ports?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao ports, you can choose other ports according to your needs.
Q:What are the certifications for your products?
A:We have ISO 9001, SGS, EWC and other certifications.
Q:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be delayed if the demand is extremely large or special circumstances occur.
Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.
Q:How to pack the products?
A:The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It caneffectively protect products from corrosion during ocean transportation.Send your message to this supplier
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SAE1518 Q345B Hollow Steel Pipe 2mm - 80mm Thickness Precision Steel Tubes Images
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