ASME B16.5 blind flanges
BLD Forged Solutions
Forged Blind Flanges RFQ Support
Blind flange RFQs are checked by standard, size, class or PN, facing, material grade, thickness, marking, inspection documents and destination country before quotation.
Sales Engineering Review
Send drawings, standards, material grades, quantity and inspection requirements directly for project sales review.
Product Scope
Use this section to confirm whether the RFQ belongs on this product page before sending drawings or line-item details.
EN 1092-1 Type 05 blind flanges
DIN blind flanges
GOST blind flanges
High-pressure blind flanges
RTJ blind flange requirements
Custom drawing blind flanges
Procurement Terms
Common product wording is grouped here so purchase lists, drawings and project specifications can be matched to the correct RFQ route.
blind flange manufacturerforged blind flange ChinaASME blind flange suppliercarbon steel blind flangestainless steel blind flangeGOST blind flangeEN 1092 blind flangeblind flange RFQ
Also Known As
Buyers use different names for the same forged product family. These terms often appear in drawings, purchase lists and supplier shortlists.
blind flangeblank flangeforged blindblind pipe flange
Common Standards
Standards are checked against the drawing, project specification and requested inspection route.
- ASME B16.5
- EN 1092-1
- DIN PN standards
- GOST 33259 / 12820 / 12821
- Project drawing or purchase specification
Material Grades
Material review confirms grade, service condition, heat treatment and certificate expectations before quotation.
ASTM A105 / A105N
ASTM A350 LF2
ASTM A182 stainless grades
Duplex and super duplex grades
Project-specified alloy steels
Size, Pressure, Class and Drawing Review Points
These items help prevent missing technical details during the first quotation review.
Outside diameter and thickness
Bolt hole pattern
Facing type: RF, FF or RTJ
Class / PN pressure rating
Material certificate and heat number marking
NDT and dimensional report requirements
Manufacturing Route
The practical route is reviewed before price and lead time are confirmed.
- Material review
- Forging route confirmation
- Heat treatment
- Rough machining
- Final machining
- Inspection and document review
- Marking, packing and export document preparation
Inspection and Documents
Inspection requirements should be included with the RFQ so document cost and timing are clear early.
MTC EN 10204 3.1
Heat treatment record
Dimensional report
PMI when alloy verification is required
UT, MT or PT when specified
Tensile, impact or hardness test records when required
Third-party inspection support by project request
RFQ Checklist
Include these details when sending the first message.
Standard
Size
Class / PN
Facing
Thickness
Material
Quantity
MTC requirement
NDT requirement
Destination country
Common Buyer Mistakes
These points often cause repeated clarification or delayed quotation.
- Sending a product name without standard, drawing or pressure rating
- Leaving bore, facing or bolt pattern unclear
- Mixing DN, NPS, PN and class references without a drawing
- Omitting inspection documents until after price discussion
- Forgetting destination country, packing or third-party inspection requirements
FAQ
Short answers for common RFQ questions.
Can you review Blind Flanges by drawing?
Yes. Send the latest drawing revision with material, quantity, tolerance, inspection and destination requirements so the RFQ can be checked before quotation.
What information is needed before quotation?
A practical RFQ should include standard or drawing, size, pressure rating, material grade, quantity, inspection requirements and destination country.
Which materials are common for Blind Flanges?
Common requests include ASTM A105, A350 LF2, stainless steel, duplex steel and project-specified alloy grades, subject to drawing and service requirements.
Can inspection documents be arranged?
MTC 3.1, dimensional reports, heat treatment records, PMI, UT, MT, PT and third-party inspection can be reviewed according to the project requirement.
Send your RFQ or drawing directly to BLD Forge Direct.
Email [email protected] with standard, drawing, material, quantity and inspection requirements.