{"id":310184,"date":"2024-10-19T21:18:28","date_gmt":"2024-10-19T21:18:28","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-84512004\/"},"modified":"2024-10-25T19:02:14","modified_gmt":"2024-10-25T19:02:14","slug":"bs-84512004","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-84512004\/","title":{"rendered":"BS 8451:2004"},"content":{"rendered":"

This British Standard specifies requirements for two classes of flexible rubber hose for gas welding and allied processes for use up to a maximum working pressure of 20 bar1<\/sup>) over the temperature range \u221225 \u00b0C to +70 \u00b0C. There is no subdivision of the classes because only the high kink resistant hose is specified.<\/p>\n

Type H hoses for gas welding, cutting and allied processes are mainly intended for use in long lengths in the construction and military sectors where the full length of hose might not be visible to the welding operative.<\/p>\n

\n

NOTE The hose is designated Type H, to maintain a relationship with BS 5120:1987.<\/p>\n<\/blockquote>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nCommittees responsible for this British\ufffdStandard <\/td>\n<\/tr>\n
3<\/td>\nContents <\/td>\n<\/tr>\n
5<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
6<\/td>\n4 Classification
5 Materials and construction
6 Colour identification
Colour of hose cover
7 Dimensions and tolerances
7.1 Bore sizes
Nominal bore
7.2 Cut lengths and tolerances <\/td>\n<\/tr>\n
7<\/td>\n8 Physical properties of lining and cover
8.1 Tensile strength and elongation at break
Tensile strength and elongation at break
8.2 Accelerated ageing
8.3 Non-ignition
8.4 Resistance to liquids
8.5 Abrasion resistance
9 Performance
9.1 Hydrostatic pressure requirements
Hydrostatic pressure rating <\/td>\n<\/tr>\n
8<\/td>\n9.2 Adhesion
9.3 Flexibility
9.4 Low temperature flexibility
9.5 Resistance to crushing
9.6 Resistance to hot surfaces
9.7 Resistance to ozone
9.8 Permeability to gas (class B only)
9.9 Resistance to kinking <\/td>\n<\/tr>\n
9<\/td>\n10 Marking <\/td>\n<\/tr>\n
10<\/td>\nAnnex A (normative) Method of test for non-ignition
Apparatus
Ignition test apparatus,
Heating furnace
Tubular sliding resistance,
Calibrated flowmeter for oxygen,
Nitrogen-filled mercury-in-glass thermometer,
Procedure <\/td>\n<\/tr>\n
11<\/td>\nApparatus for ignition tests on lining samples <\/td>\n<\/tr>\n
12<\/td>\nAnnex B (normative) Method of test for resistance to
Procedure
Calculation of results
Annex C (normative) Method of test for crush resistance
Connect the hose to a supply of air maintained at a constant pressure of (30.0\ufffd\u00b1\ufffd1) mbar at the i…
Apply a force of (340\ufffd\u00b1\ufffd10)\ufffdN evenly over a length of (25 \u00b1\ufffd1)\ufffdmm of the hose and after (30\ufffd\u00b1\ufffd2.5…
Annex D (normative) Method of test for resistance to hot surfaces
Cut a length of hose (100 \u00b1 10)\ufffdmm in length. Place the hose at right angles to a heated bar of (…
After (60 \u00b1 1)\ufffds, remove the hose and examine for any exposure of the reinforcement. <\/td>\n<\/tr>\n
13<\/td>\nTypical apparatus for determining resistance to hot surfaces <\/td>\n<\/tr>\n
14<\/td>\nAnnex E (normative) Method of test for resistance to kinking
Clip an appropriate nut and nipple conforming to BS EN 560 to each end of the test hose. Lay the …
Pull the movable block axially away from the fixed block at a steady rate until the hose straight…
Record the lowest pressure reading obtained on the manometer during the straightening of the hose. <\/td>\n<\/tr>\n
15<\/td>\nTypical apparatus for resistance to kinking test <\/td>\n<\/tr>\n
17<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Rubber hoses for gas welding, cutting and allied processes. High kink-resistant heavy duty welding hose (type H). Specification<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2004<\/td>\n18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":310187,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1187,2641],"product_tag":[],"class_list":{"0":"post-310184","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-140-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/310184","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/310187"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=310184"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=310184"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=310184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}