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- Product Parameters -

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PROPERTY NAMEDESCRIPTION/SAMPLE VALUECOMMON STANDARD REFERENCE
HEAD TYPEElliptical head (EHA/EHB), butterfly head (THA/THB), hemispherical head, conical head, flat headASME VIII Div.1, GB/T 25198
NOMINAL DIAMETER (DN/ID)DN200~DN3000 (national standard) or NPS 8"~120" (American standard)GB/T 25198; ASME B16.9
THICKNESS (δ)Calculated according to the design pressure, such as DN800 head thickness ≈10mm (carbon steel, PN1.0MPa)Calculated by standard formula or software
STRAIGHT EDGE HEIGHTUsually 25mm, 40mm, etc. (such as DN800 EHA head straight edge height ≈25mm)GB/T 25198-2010
CURVED DEPTH (H)Elliptical head H≈0.25D (e.g. DN800 head H≈200mm)
INTERNAL SURFACE AREA/VOLUME CALCULATEDAccording to standard formula (e.g. DN800 EHA volume≈0.12m³)
MATERIAL STANDARDSCarbon steel (Q345R), stainless steel (S30408/S31603), alloy steel (SA-516 Gr.70)GB/T 713; ASME SA-240
DESIGN PRESSUREPN0.6/1.0/1.6/2.5MPa (national standard) or Class 150/300 (American standard)ASME VIII Div.1; GB/T 150
MANUFACTURING PROCESSCold forming, hot forming (material tempering or heat treatment requirements need to be considered)
Connection TypeWelded type (jointed with the cylinder), flange type (head with flange edge)
Inspection requirementsNon-destructive testing (RT/UT), geometric tolerance (ovality, straight edge parallelism)ASME VIII;GB/T 25198


- FAQ -

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

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:How can I get a quotation from you ?

A:You can leave us message, and we will reply every message in time. Or we may talk on line.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

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.we accept the third party inspection absolutely.

Q:What are the advantages of your company?

A:(1)More Than 30 year's Experience

(2)The company is a modern steel enterprise group integrating precision manufacturing, spot warehousing, international logistics, and product deep processing.

(3)World-class production equipment, product quality that meets international certifications, and timely and thoughtful after-sales service

(4)Never stop product research and development and innovation to create high-quality products that meet the global standards.

(5)Integrity business philosophy, the highest quality products, the most reasonable prices, and a global marketing network.

Q:How do we trust your company?

A:We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.

- Product Packaging -

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